| The Speakup User's Guide | |
| For Speakup 3.1.2 and Later | |
| By Gene Collins | |
| Updated by others | |
| Last modified on Mon Sep 27 14:26:31 2010 | |
| Document version 1.3 | |
| Copyright (c) 2005 Gene Collins | |
| Copyright (c) 2008 Samuel Thibault | |
| Copyright (c) 2009, 2010 the Speakup Team | |
| Permission is granted to copy, distribute and/or modify this document | |
| under the terms of the GNU Free Documentation License, Version 1.2 or | |
| any later version published by the Free Software Foundation; with no | |
| Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A | |
| copy of the license is included in the section entitled "GNU Free | |
| Documentation License". | |
| Preface | |
| The purpose of this document is to familiarize users with the user | |
| interface to Speakup, a Linux Screen Reader. If you need instructions | |
| for installing or obtaining Speakup, visit the web site at | |
| http://linux-speakup.org/. Speakup is a set of patches to the standard | |
| Linux kernel source tree. It can be built as a series of modules, or as | |
| a part of a monolithic kernel. These details are beyond the scope of | |
| this manual, but the user may need to be aware of the module | |
| capabilities, depending on how your system administrator has installed | |
| Speakup. If Speakup is built as a part of a monolithic kernel, and the | |
| user is using a hardware synthesizer, then Speakup will be able to | |
| provide speech access from the time the kernel is loaded, until the time | |
| the system is shutdown. This means that if you have obtained Linux | |
| installation media for a distribution which includes Speakup as a part | |
| of its kernel, you will be able, as a blind person, to install Linux | |
| with speech access unaided by a sighted person. Again, these details | |
| are beyond the scope of this manual, but the user should be aware of | |
| them. See the web site mentioned above for further details. | |
| 1. Starting Speakup | |
| If your system administrator has installed Speakup to work with your | |
| specific synthesizer by default, then all you need to do to use Speakup | |
| is to boot your system, and Speakup should come up talking. This | |
| assumes of course that your synthesizer is a supported hardware | |
| synthesizer, and that it is either installed in or connected to your | |
| system, and is if necessary powered on. | |
| It is possible, however, that Speakup may have been compiled into the | |
| kernel with no default synthesizer. It is even possible that your | |
| kernel has been compiled with support for some of the supported | |
| synthesizers and not others. If you find that this is the case, and | |
| your synthesizer is supported but not available, complain to the person | |
| who compiled and installed your kernel. Or better yet, go to the web | |
| site, and learn how to patch Speakup into your own kernel source, and | |
| build and install your own kernel. | |
| If your kernel has been compiled with Speakup, and has no default | |
| synthesizer set, or you would like to use a different synthesizer than | |
| the default one, then you may issue the following command at the boot | |
| prompt of your boot loader. | |
| linux speakup.synth=ltlk | |
| This command would tell Speakup to look for and use a LiteTalk or | |
| DoubleTalk LT at boot up. You may replace the ltlk synthesizer keyword | |
| with the keyword for whatever synthesizer you wish to use. The | |
| speakup.synth parameter will accept the following keywords, provided | |
| that support for the related synthesizers has been built into the | |
| kernel. | |
| acntsa -- Accent SA | |
| acntpc -- Accent PC | |
| apollo -- Apollo | |
| audptr -- Audapter | |
| bns -- Braille 'n Speak | |
| dectlk -- DecTalk Express (old and new, db9 serial only) | |
| decext -- DecTalk (old) External | |
| dtlk -- DoubleTalk PC | |
| keypc -- Keynote Gold PC | |
| ltlk -- DoubleTalk LT, LiteTalk, or external Tripletalk (db9 serial only) | |
| spkout -- Speak Out | |
| txprt -- Transport | |
| dummy -- Plain text terminal | |
| Note: Speakup does * NOT * support usb connections! Speakup also does * | |
| NOT * support the internal Tripletalk! | |
| Speakup does support two other synthesizers, but because they work in | |
| conjunction with other software, they must be loaded as modules after | |
| their related software is loaded, and so are not available at boot up. | |
| These are as follows: | |
| decpc -- DecTalk PC (not available at boot up) | |
| soft -- One of several software synthesizers (not available at boot up) | |
| See the sections on loading modules and software synthesizers later in | |
| this manual for further details. It should be noted here that the | |
| speakup.synth boot parameter will have no effect if Speakup has been | |
| compiled as modules. In order for Speakup modules to be loaded during | |
| the boot process, such action must be configured by your system | |
| administrator. This will mean that you will hear some, but not all, of | |
| the bootup messages. | |
| 2. Basic operation | |
| Once you have booted the system, and if necessary, have supplied the | |
| proper bootup parameter for your synthesizer, Speakup will begin | |
| talking as soon as the kernel is loaded. In fact, it will talk a lot! | |
| It will speak all the boot up messages that the kernel prints on the | |
| screen during the boot process. This is because Speakup is not a | |
| separate screen reader, but is actually built into the operating | |
| system. Since almost all console applications must print text on the | |
| screen using the kernel, and must get their keyboard input through the | |
| kernel, they are automatically handled properly by Speakup. There are a | |
| few exceptions, but we'll come to those later. | |
| Note: In this guide I will refer to the numeric keypad as the keypad. | |
| This is done because the speakupmap.map file referred to later in this | |
| manual uses the term keypad instead of numeric keypad. Also I'm lazy | |
| and would rather only type one word. So keypad it is. Got it? Good. | |
| Most of the Speakup review keys are located on the keypad at the far | |
| right of the keyboard. The numlock key should be off, in order for these | |
| to work. If you toggle the numlock on, the keypad will produce numbers, | |
| which is exactly what you want for spreadsheets and such. For the | |
| purposes of this guide, you should have the numlock turned off, which is | |
| its default state at bootup. | |
| You probably won't want to listen to all the bootup messages every time | |
| you start your system, though it's a good idea to listen to them at | |
| least once, just so you'll know what kind of information is available to | |
| you during the boot process. You can always review these messages after | |
| bootup with the command: | |
| dmesg | more | |
| In order to speed the boot process, and to silence the speaking of the | |
| bootup messages, just press the keypad enter key. This key is located | |
| in the bottom right corner of the keypad. Speakup will shut up and stay | |
| that way, until you press another key. | |
| You can check to see if the boot process has completed by pressing the 8 | |
| key on the keypad, which reads the current line. This also has the | |
| effect of starting Speakup talking again, so you can press keypad enter | |
| to silence it again if the boot process has not completed. | |
| When the boot process is complete, you will arrive at a "login" prompt. | |
| At this point, you'll need to type in your user id and password, as | |
| provided by your system administrator. You will hear Speakup speak the | |
| letters of your user id as you type it, but not the password. This is | |
| because the password is not displayed on the screen for security | |
| reasons. This has nothing to do with Speakup, it's a Linux security | |
| feature. | |
| Once you've logged in, you can run any Linux command or program which is | |
| allowed by your user id. Normal users will not be able to run programs | |
| which require root privileges. | |
| When you are running a program or command, Speakup will automatically | |
| speak new text as it arrives on the screen. You can at any time silence | |
| the speech with keypad enter, or use any of the Speakup review keys. | |
| Here are some basic Speakup review keys, and a short description of what | |
| they do. | |
| keypad 1 -- read previous character | |
| keypad 2 -- read current character (pressing keypad 2 twice rapidly will speak | |
| the current character phonetically) | |
| keypad 3 -- read next character | |
| keypad 4 -- read previous word | |
| keypad 5 -- read current word (press twice rapidly to spell the current word) | |
| keypad 6 -- read next word | |
| keypad 7 -- read previous line | |
| keypad 8 -- read current line (press twice rapidly to hear how much the | |
| text on the current line is indented) | |
| keypad 9 -- read next line | |
| keypad period -- speak current cursor position and announce current | |
| virtual console | |
| It's also worth noting that the insert key on the keypad is mapped | |
| as the speakup key. Instead of pressing and releasing this key, as you | |
| do under DOS or Windows, you hold it like a shift key, and press other | |
| keys in combination with it. For example, repeatedly holding keypad | |
| insert, from now on called speakup, and keypad enter will toggle the | |
| speaking of new text on the screen on and off. This is not the same as | |
| just pressing keypad enter by itself, which just silences the speech | |
| until you hit another key. When you hit speakup plus keypad enter, | |
| Speakup will say, "You turned me off.", or "Hey, that's better." When | |
| Speakup is turned off, no new text on the screen will be spoken. You | |
| can still use the reading controls to review the screen however. | |
| 3. Using the Speakup Help System | |
| In order to enter the Speakup help system, press and hold the speakup | |
| key (remember that this is the keypad insert key), and press the f1 key. | |
| You will hear the message: | |
| "Press space to leave help, cursor up or down to scroll, or a letter to | |
| go to commands in list." | |
| When you press the spacebar to leave the help system, you will hear: | |
| "Leaving help." | |
| While you are in the Speakup help system, you can scroll up or down | |
| through the list of available commands using the cursor keys. The list | |
| of commands is arranged in alphabetical order. If you wish to jump to | |
| commands in a specific part of the alphabet, you may press the letter of | |
| the alphabet you wish to jump to. | |
| You can also just explore by typing keyboard keys. Pressing keys will | |
| cause Speakup to speak the command associated with that key. For | |
| example, if you press the keypad 8 key, you will hear: | |
| "Keypad 8 is line, say current." | |
| You'll notice that some commands do not have keys assigned to them. | |
| This is because they are very infrequently used commands, and are also | |
| accessible through the sys system. We'll discuss the sys system later | |
| in this manual. | |
| You'll also notice that some commands have two keys assigned to them. | |
| This is because Speakup has a built in set of alternative key bindings | |
| for laptop users. The alternate speakup key is the caps lock key. You | |
| can press and hold the caps lock key, while pressing an alternate | |
| speakup command key to activate the command. On most laptops, the | |
| numeric keypad is defined as the keys in the j k l area of the keyboard. | |
| There is usually a function key which turns this keypad function on and | |
| off, and some other key which controls the numlock state. Toggling the | |
| keypad functionality on and off can become a royal pain. So, Speakup | |
| gives you a simple way to get at an alternative set of key mappings for | |
| your laptop. These are also available by default on desktop systems, | |
| because Speakup does not know whether it is running on a desktop or | |
| laptop. So you may choose which set of Speakup keys to use. Some | |
| system administrators may have chosen to compile Speakup for a desktop | |
| system without this set of alternate key bindings, but these details are | |
| beyond the scope of this manual. To use the caps lock for its normal | |
| purpose, hold the shift key while toggling the caps lock on and off. We | |
| should note here, that holding the caps lock key and pressing the z key | |
| will toggle the alternate j k l keypad on and off. | |
| 4. Keys and Their Assigned Commands | |
| In this section, we'll go through a list of all the speakup keys and | |
| commands. You can also get a list of commands and assigned keys from | |
| the help system. | |
| The following list was taken from the speakupmap.map file. Key | |
| assignments are on the left of the equal sign, and the associated | |
| Speakup commands are on the right. The designation "spk" means to press | |
| and hold the speakup key, a.k.a. keypad insert, a.k.a. caps lock, while | |
| pressing the other specified key. | |
| spk key_f9 = punc_level_dec | |
| spk key_f10 = punc_level_inc | |
| spk key_f11 = reading_punc_dec | |
| spk key_f12 = reading_punc_inc | |
| spk key_1 = vol_dec | |
| spk key_2 = vol_inc | |
| spk key_3 = pitch_dec | |
| spk key_4 = pitch_inc | |
| spk key_5 = rate_dec | |
| spk key_6 = rate_inc | |
| key_kpasterisk = toggle_cursoring | |
| spk key_kpasterisk = speakup_goto | |
| spk key_f1 = speakup_help | |
| spk key_f2 = set_win | |
| spk key_f3 = clear_win | |
| spk key_f4 = enable_win | |
| spk key_f5 = edit_some | |
| spk key_f6 = edit_most | |
| spk key_f7 = edit_delim | |
| spk key_f8 = edit_repeat | |
| shift spk key_f9 = edit_exnum | |
| key_kp7 = say_prev_line | |
| spk key_kp7 = left_edge | |
| key_kp8 = say_line | |
| double key_kp8 = say_line_indent | |
| spk key_kp8 = say_from_top | |
| key_kp9 = say_next_line | |
| spk key_kp9 = top_edge | |
| key_kpminus = speakup_parked | |
| spk key_kpminus = say_char_num | |
| key_kp4 = say_prev_word | |
| spk key_kp4 = say_from_left | |
| key_kp5 = say_word | |
| double key_kp5 = spell_word | |
| spk key_kp5 = spell_phonetic | |
| key_kp6 = say_next_word | |
| spk key_kp6 = say_to_right | |
| key_kpplus = say_screen | |
| spk key_kpplus = say_win | |
| key_kp1 = say_prev_char | |
| spk key_kp1 = right_edge | |
| key_kp2 = say_char | |
| spk key_kp2 = say_to_bottom | |
| double key_kp2 = say_phonetic_char | |
| key_kp3 = say_next_char | |
| spk key_kp3 = bottom_edge | |
| key_kp0 = spk_key | |
| key_kpdot = say_position | |
| spk key_kpdot = say_attributes | |
| key_kpenter = speakup_quiet | |
| spk key_kpenter = speakup_off | |
| key_sysrq = speech_kill | |
| key_kpslash = speakup_cut | |
| spk key_kpslash = speakup_paste | |
| spk key_pageup = say_first_char | |
| spk key_pagedown = say_last_char | |
| key_capslock = spk_key | |
| spk key_z = spk_lock | |
| key_leftmeta = spk_key | |
| ctrl spk key_0 = speakup_goto | |
| spk key_u = say_prev_line | |
| spk key_i = say_line | |
| double spk key_i = say_line_indent | |
| spk key_o = say_next_line | |
| spk key_minus = speakup_parked | |
| shift spk key_minus = say_char_num | |
| spk key_j = say_prev_word | |
| spk key_k = say_word | |
| double spk key_k = spell_word | |
| spk key_l = say_next_word | |
| spk key_m = say_prev_char | |
| spk key_comma = say_char | |
| double spk key_comma = say_phonetic_char | |
| spk key_dot = say_next_char | |
| spk key_n = say_position | |
| ctrl spk key_m = left_edge | |
| ctrl spk key_y = top_edge | |
| ctrl spk key_dot = right_edge | |
| ctrl spk key_p = bottom_edge | |
| spk key_apostrophe = say_screen | |
| spk key_h = say_from_left | |
| spk key_y = say_from_top | |
| spk key_semicolon = say_to_right | |
| spk key_p = say_to_bottom | |
| spk key_slash = say_attributes | |
| spk key_enter = speakup_quiet | |
| ctrl spk key_enter = speakup_off | |
| spk key_9 = speakup_cut | |
| spk key_8 = speakup_paste | |
| shift spk key_m = say_first_char | |
| ctrl spk key_semicolon = say_last_char | |
| spk key_r = read_all_doc | |
| 5. The Speakup Sys System | |
| The Speakup screen reader also creates a speakup subdirectory as a part | |
| of the sys system. | |
| As a convenience, run as root | |
| ln -s /sys/accessibility/speakup /speakup | |
| to directly access speakup parameters from /speakup. | |
| You can see these entries by typing the command: | |
| ls -1 /speakup/* | |
| If you issue the above ls command, you will get back something like | |
| this: | |
| /speakup/attrib_bleep | |
| /speakup/bell_pos | |
| /speakup/bleep_time | |
| /speakup/bleeps | |
| /speakup/cursor_time | |
| /speakup/delimiters | |
| /speakup/ex_num | |
| /speakup/key_echo | |
| /speakup/keymap | |
| /speakup/no_interrupt | |
| /speakup/punc_all | |
| /speakup/punc_level | |
| /speakup/punc_most | |
| /speakup/punc_some | |
| /speakup/reading_punc | |
| /speakup/repeats | |
| /speakup/say_control | |
| /speakup/say_word_ctl | |
| /speakup/silent | |
| /speakup/spell_delay | |
| /speakup/synth | |
| /speakup/synth_direct | |
| /speakup/version | |
| /speakup/i18n: | |
| announcements | |
| characters | |
| chartab | |
| colors | |
| ctl_keys | |
| formatted | |
| function_names | |
| key_names | |
| states | |
| /speakup/soft: | |
| caps_start | |
| caps_stop | |
| delay_time | |
| direct | |
| freq | |
| full_time | |
| jiffy_delta | |
| pitch | |
| inflection | |
| punct | |
| rate | |
| tone | |
| trigger_time | |
| voice | |
| vol | |
| Notice the two subdirectories of /speakup: /speakup/i18n and | |
| /speakup/soft. | |
| The i18n subdirectory is described in a later section. | |
| The files under /speakup/soft represent settings that are specific to the | |
| driver for the software synthesizer. If you use the LiteTalk, your | |
| synthesizer-specific settings would be found in /speakup/ltlk. In other words, | |
| a subdirectory named /speakup/KWD is created to hold parameters specific | |
| to the device whose keyword is KWD. | |
| These parameters include volume, rate, pitch, and others. | |
| In addition to using the Speakup hot keys to change such things as | |
| volume, pitch, and rate, you can also echo values to the appropriate | |
| entry in the /speakup directory. This is very useful, since it | |
| lets you control Speakup parameters from within a script. How you | |
| would write such scripts is somewhat beyond the scope of this manual, | |
| but I will include a couple of simple examples here to give you a | |
| general idea of what such scripts can do. | |
| Suppose for example, that you wanted to control both the punctuation | |
| level and the reading punctuation level at the same time. For | |
| simplicity, we'll call them punc0, punc1, punc2, and punc3. The scripts | |
| might look something like this: | |
| #!/bin/bash | |
| # punc0 | |
| # set punc and reading punc levels to 0 | |
| echo 0 >/speakup/punc_level | |
| echo 0 >/speakup/reading_punc | |
| echo Punctuation level set to 0. | |
| #!/bin/bash | |
| # punc1 | |
| # set punc and reading punc levels to 1 | |
| echo 1 >/speakup/punc_level | |
| echo 1 >/speakup/reading_punc | |
| echo Punctuation level set to 1. | |
| #!/bin/bash | |
| # punc2 | |
| # set punc and reading punc levels to 2 | |
| echo 2 >/speakup/punc_level | |
| echo 2 >/speakup/reading_punc | |
| echo Punctuation level set to 2. | |
| #!/bin/bash | |
| # punc3 | |
| # set punc and reading punc levels to 3 | |
| echo 3 >/speakup/punc_level | |
| echo 3 >/speakup/reading_punc | |
| echo Punctuation level set to 3. | |
| If you were to store these four small scripts in a directory in your | |
| path, perhaps /usr/local/bin, and set the permissions to 755 with the | |
| chmod command, then you could change the default reading punc and | |
| punctuation levels at the same time by issuing just one command. For | |
| example, if you were to execute the punc3 command at your shell prompt, | |
| then the reading punc and punc level would both get set to 3. | |
| I should note that the above scripts were written to work with bash, but | |
| regardless of which shell you use, you should be able to do something | |
| similar. | |
| The Speakup sys system also has another interesting use. You can echo | |
| Speakup parameters into the sys system in a script during system | |
| startup, and speakup will return to your preferred parameters every time | |
| the system is rebooted. | |
| Most of the Speakup sys parameters can be manipulated by a regular user | |
| on the system. However, there are a few parameters that are dangerous | |
| enough that they should only be manipulated by the root user on your | |
| system. There are even some parameters that are read only, and cannot | |
| be written to at all. For example, the version entry in the Speakup | |
| sys system is read only. This is because there is no reason for a user | |
| to tamper with the version number which is reported by Speakup. Doing | |
| an ls -l on /speakup/version will return this: | |
| -r--r--r-- 1 root root 0 Mar 21 13:46 /speakup/version | |
| As you can see, the version entry in the Speakup sys system is read | |
| only, is owned by root, and belongs to the root group. Doing a cat of | |
| /speakup/version will display the Speakup version number, like | |
| this: | |
| cat /speakup/version | |
| Speakup v-2.00 CVS: Thu Oct 21 10:38:21 EDT 2004 | |
| synth dtlk version 1.1 | |
| The display shows the Speakup version number, along with the version | |
| number of the driver for the current synthesizer. | |
| Looking at entries in the Speakup sys system can be useful in many | |
| ways. For example, you might wish to know what level your volume is set | |
| at. You could type: | |
| cat /speakup/KWD/vol | |
| # Replace KWD with the keyword for your synthesizer, E.G., ltlk for LiteTalk. | |
| 5 | |
| The number five which comes back is the level at which the synthesizer | |
| volume is set at. | |
| All the entries in the Speakup sys system are readable, some are | |
| writable by root only, and some are writable by everyone. Unless you | |
| know what you are doing, you should probably leave the ones that are | |
| writable by root only alone. Most of the names are self explanatory. | |
| Vol for controlling volume, pitch for pitch, inflection for pitch range, rate | |
| for controlling speaking rate, etc. If you find one you aren't sure about, you | |
| can post a query on the Speakup list. | |
| 6. Changing Synthesizers | |
| It is possible to change to a different synthesizer while speakup is | |
| running. In other words, it is not necessary to reboot the system | |
| in order to use a different synthesizer. You can simply echo the | |
| synthesizer keyword to the /speakup/synth sys entry. | |
| Depending on your situation, you may wish to echo none to the synth | |
| sys entry, to disable speech while one synthesizer is disconnected and | |
| a second one is connected in its place. Then echo the keyword for the | |
| new synthesizer into the synth sys entry in order to start speech | |
| with the newly connected synthesizer. See the list of synthesizer | |
| keywords in section 1 to find the keyword which matches your synth. | |
| 7. Loading modules | |
| As mentioned earlier, Speakup can either be completely compiled into the | |
| kernel, with the exception of the help module, or it can be compiled as | |
| a series of modules. When compiled as modules, Speakup will only be | |
| able to speak some of the bootup messages if your system administrator | |
| has configured the system to load the modules at boo time. The modules | |
| can be loaded after the file systems have been checked and mounted, or | |
| from an initrd. There is a third possibility. Speakup can be compiled | |
| with some components built into the kernel, and others as modules. As | |
| we'll see in the next section, this is particularly useful when you are | |
| working with software synthesizers. | |
| If Speakup is completely compiled as modules, then you must use the | |
| modprobe command to load Speakup. You do this by loading the module for | |
| the synthesizer driver you wish to use. The driver modules are all | |
| named speakup_<keyword>, where <keyword> is the keyword for the | |
| synthesizer you want. So, in order to load the driver for the DecTalk | |
| Express, you would type the following command: | |
| modprobe speakup_dectlk | |
| Issuing this command would load the DecTalk Express driver and all other | |
| related Speakup modules necessary to get Speakup up and running. | |
| To completely unload Speakup, again presuming that it is entirely built | |
| as modules, you would give the command: | |
| modprobe -r speakup_dectlk | |
| The above command assumes you were running a DecTalk Express. If you | |
| were using a different synth, then you would substitute its keyword in | |
| place of dectlk. | |
| If you have multiple drivers loaded, you need to unload all of them, in | |
| order to completely unload Speakup. | |
| For example, if you have loaded both the dectlk and ltlk drivers, use the | |
| command: | |
| modprobe -r speakup_dectlk speakup_ltlk | |
| You cannot unload the driver for software synthesizers when a user-space | |
| daemon is using /dev/softsynth. First, kill the daemon. Next, remove | |
| the driver with the command: | |
| modprobe -r speakup_soft | |
| Now, suppose we have a situation where the main Speakup component | |
| is built into the kernel, and some or all of the drivers are built as | |
| modules. Since the main part of Speakup is compiled into the kernel, a | |
| partial Speakup sys system has been created which we can take advantage | |
| of by simply echoing the synthesizer keyword into the | |
| /speakup/synth sys entry. This will cause the kernel to | |
| automatically load the appropriate driver module, and start Speakup | |
| talking. To switch to another synth, just echo a new keyword to the | |
| synth sys entry. For example, to load the DoubleTalk LT driver, | |
| you would type: | |
| echo ltlk >/speakup/synth | |
| You can use the modprobe -r command to unload driver modules, regardless | |
| of whether the main part of Speakup has been built into the kernel or | |
| not. | |
| 8. Using Software Synthesizers | |
| Using a software synthesizer requires that some other software be | |
| installed and running on your system. For this reason, software | |
| synthesizers are not available for use at bootup, or during a system | |
| installation process. | |
| There are two freely-available solutions for software speech: Espeakup and | |
| Speech Dispatcher. | |
| These are described in subsections 8.1 and 8.2, respectively. | |
| During the rest of this section, we assume that speakup_soft is either | |
| built in to your kernel, or loaded as a module. | |
| If your system does not have udev installed , before you can use a | |
| software synthesizer, you must have created the /dev/softsynth device. | |
| If you have not already done so, issue the following commands as root: | |
| cd /dev | |
| mknod softsynth c 10 26 | |
| While we are at it, we might just as well create the /dev/synth device, | |
| which can be used to let user space programs send information to your | |
| synthesizer. To create /dev/synth, change to the /dev directory, and | |
| issue the following command as root: | |
| mknod synth c 10 25 | |
| of both. | |
| 8.1. Espeakup | |
| Espeakup is a connector between Speakup and the eSpeak software synthesizer. | |
| Espeakup may already be available as a package for your distribution | |
| of Linux. If it is not packaged, you need to install it manually. | |
| You can find it in the contrib/ subdirectory of the Speakup sources. | |
| The filename is espeakup-$VERSION.tar.bz2, where $VERSION | |
| depends on the current release of Espeakup. The Speakup 3.1.2 source | |
| ships with version 0.71 of Espeakup. | |
| The README file included with the Espeakup sources describes the process | |
| of manual installation. | |
| Assuming that Espeakup is installed, either by the user or by the distributor, | |
| follow these steps to use it. | |
| Tell Speakup to use the "soft driver: | |
| echo soft > /speakup/synth | |
| Finally, start the espeakup program. There are two ways to do it. | |
| Both require root privileges. | |
| If Espeakup was installed as a package for your Linux distribution, | |
| you probably have a distribution-specific script that controls the operation | |
| of the daemon. Look for a file named espeakup under /etc/init.d or | |
| /etc/rc.d. Execute the following command with root privileges: | |
| /etc/init.d/espeakup start | |
| Replace init.d with rc.d, if your distribution uses scripts located under | |
| /etc/rc.d. | |
| Your distribution will also have a procedure for starting daemons at | |
| boot-time, so it is possible to have software speech as soon as user-space | |
| daemons are started by the bootup scripts. | |
| These procedures are not described in this document. | |
| If you built Espeakup manually, the "make install" step placed the binary | |
| under /usr/bin. | |
| Run the following command as root: | |
| /usr/bin/espeakup | |
| Espeakup should start speaking. | |
| 8.2. Speech Dispatcher | |
| For this option, you must have a package called | |
| Speech Dispatcher running on your system, and it must be configured to | |
| work with one of its supported software synthesizers. | |
| Two open source synthesizers you might use are Flite and Festival. You | |
| might also choose to purchase the Software DecTalk from Fonix Sales Inc. | |
| If you run a google search for Fonix, you'll find their web site. | |
| You can obtain a copy of Speech Dispatcher from free(b)soft at | |
| http://www.freebsoft.org/. Follow the installation instructions that | |
| come with Speech Dispatcher in order to install and configure Speech | |
| Dispatcher. You can check out the web site for your Linux distribution | |
| in order to get a copy of either Flite or Festival. Your Linux | |
| distribution may also have a precompiled Speech Dispatcher package. | |
| Once you've installed, configured, and tested Speech Dispatcher with your | |
| chosen software synthesizer, you still need one more piece of software | |
| in order to make things work. You need a package called speechd-up. | |
| You get it from the free(b)soft web site mentioned above. After you've | |
| compiled and installed speechd-up, you are almost ready to begin using | |
| your software synthesizer. | |
| Now you can begin using your software synthesizer. In order to do so, | |
| echo the soft keyword to the synth sys entry like this: | |
| echo soft >/speakup/synth | |
| Next run the speechd_up command like this: | |
| speechd_up & | |
| Your synth should now start talking, and you should be able to adjust | |
| the pitch, rate, etc. | |
| 9. Using The DecTalk PC Card | |
| The DecTalk PC card is an ISA card that is inserted into one of the ISA | |
| slots in your computer. It requires that the DecTalk PC software be | |
| installed on your computer, and that the software be loaded onto the | |
| Dectalk PC card before it can be used. | |
| You can get the dec_pc.tgz file from the linux-speakup.org site. The | |
| dec_pc.tgz file is in the ~ftp/pub/linux/speakup directory. | |
| After you have downloaded the dec_pc.tgz file, untar it in your home | |
| directory, and read the Readme file in the newly created dec_pc | |
| directory. | |
| The easiest way to get the software working is to copy the entire dec_pc | |
| directory into /user/local/lib. To do this, su to root in your home | |
| directory, and issue the command: | |
| cp dec_pc /usr/local/lib | |
| You will need to copy the dtload command from the dec_pc directory to a | |
| directory in your path. Either /usr/bin or /usr/local/bin is a good | |
| choice. | |
| You can now run the dtload command in order to load the DecTalk PC | |
| software onto the card. After you have done this, echo the decpc | |
| keyword to the synth entry in the sys system like this: | |
| echo decpc >/speakup/synth | |
| Your DecTalk PC should start talking, and then you can adjust the pitch, | |
| rate, volume, voice, etc. The voice entry in the Speakup sys system | |
| will accept a number from 0 through 7 for the DecTalk PC synthesizer, | |
| which will give you access to some of the DecTalk voices. | |
| 10. Using Cursor Tracking | |
| In Speakup version 2.0 and later, cursor tracking is turned on by | |
| default. This means that when you are using an editor, Speakup will | |
| automatically speak characters as you move left and right with the | |
| cursor keys, and lines as you move up and down with the cursor keys. | |
| This is the traditional sort of cursor tracking. | |
| Recent versions of Speakup provide two additional ways to control the | |
| text that is spoken when the cursor is moved: | |
| "highlight tracking" and "read window." | |
| They are described later in this section. | |
| Sometimes, these modes get in your way, so you can disable cursor tracking | |
| altogether. | |
| You may select among the various forms of cursor tracking using the keypad | |
| asterisk key. | |
| Each time you press this key, a new mode is selected, and Speakup speaks | |
| the name of the new mode. The names for the four possible states of cursor | |
| tracking are: "cursoring on", "highlight tracking", "read window", | |
| and "cursoring off." The keypad asterisk key moves through the list of | |
| modes in a circular fashion. | |
| If highlight tracking is enabled, Speakup tracks highlighted text, | |
| rather than the cursor itself. When you move the cursor with the arrow keys, | |
| Speakup speaks the currently highlighted information. | |
| This is useful when moving through various menus and dialog boxes. | |
| If cursor tracking isn't helping you while navigating a menu, | |
| try highlight tracking. | |
| With the "read window" variety of cursor tracking, you can limit the text | |
| that Speakup speaks by specifying a window of interest on the screen. | |
| See section 15 for a description of the process of defining windows. | |
| When you move the cursor via the arrow keys, Speakup only speaks | |
| the contents of the window. This is especially helpful when you are hearing | |
| superfluous speech. Consider the following example. | |
| Suppose that you are at a shell prompt. You use bash, and you want to | |
| explore your command history using the up and down arrow keys. If you | |
| have enabled cursor tracking, you will hear two pieces of information. | |
| Speakup speaks both your shell prompt and the current entry from the | |
| command history. You may not want to hear the prompt repeated | |
| each time you move, so you can silence it by specifying a window. Find | |
| the last line of text on the screen. Clear the current window by pressing | |
| the key combination speakup f3. Use the review cursor to find the first | |
| character that follows your shell prompt. Press speakup + f2 twice, to | |
| define a one-line window. The boundaries of the window are the | |
| character following the shell prompt and the end of the line. Now, cycle | |
| through the cursor tracking modes using keypad asterisk, until Speakup | |
| says "read window." Move through your history using your arrow keys. | |
| You will notice that Speakup no longer speaks the redundant prompt. | |
| Some folks like to turn cursor tracking off while they are using the | |
| lynx web browser. You definitely want to turn cursor tracking off when | |
| you are using the alsamixer application. Otherwise, you won't be able | |
| to hear your mixer settings while you are using the arrow keys. | |
| 11. Cut and Paste | |
| One of Speakup's more useful features is the ability to cut and paste | |
| text on the screen. This means that you can capture information from a | |
| program, and paste that captured text into a different place in the | |
| program, or into an entirely different program, which may even be | |
| running on a different console. | |
| For example, in this manual, we have made references to several web | |
| sites. It would be nice if you could cut and paste these urls into your | |
| web browser. Speakup does this quite nicely. Suppose you wanted to | |
| past the following url into your browser: | |
| http://linux-speakup.org/ | |
| Use the speakup review keys to position the reading cursor on the first | |
| character of the above url. When the reading cursor is in position, | |
| press the keypad slash key once. Speakup will say, "mark". Next, | |
| position the reading cursor on the rightmost character of the above | |
| url. Press the keypad slash key once again to actually cut the text | |
| from the screen. Speakup will say, "cut". Although we call this | |
| cutting, Speakup does not actually delete the cut text from the screen. | |
| It makes a copy of the text in a special buffer for later pasting. | |
| Now that you have the url cut from the screen, you can paste it into | |
| your browser, or even paste the url on a command line as an argument to | |
| your browser. | |
| Suppose you want to start lynx and go to the Speakup site. | |
| You can switch to a different console with the alt left and right | |
| arrows, or you can switch to a specific console by typing alt and a | |
| function key. These are not Speakup commands, just standard Linux | |
| console capabilities. | |
| Once you've changed to an appropriate console, and are at a shell prompt, | |
| type the word lynx, followed by a space. Now press and hold the speakup | |
| key, while you type the keypad slash character. The url will be pasted | |
| onto the command line, just as though you had typed it in. Press the | |
| enter key to execute the command. | |
| The paste buffer will continue to hold the cut information, until a new | |
| mark and cut operation is carried out. This means you can paste the cut | |
| information as many times as you like before doing another cut | |
| operation. | |
| You are not limited to cutting and pasting only one line on the screen. | |
| You can also cut and paste rectangular regions of the screen. Just | |
| position the reading cursor at the top left corner of the text to be | |
| cut, mark it with the keypad slash key, then position the reading cursor | |
| at the bottom right corner of the region to be cut, and cut it with the | |
| keypad slash key. | |
| 12. Changing the Pronunciation of Characters | |
| Through the /speakup/i18n/characters sys entry, Speakup gives you the | |
| ability to change how Speakup pronounces a given character. You could, | |
| for example, change how some punctuation characters are spoken. You can | |
| even change how Speakup will pronounce certain letters. | |
| You may, for example, wish to change how Speakup pronounces the z | |
| character. The author of Speakup, Kirk Reiser, is Canadian, and thus | |
| believes that the z should be pronounced zed. If you are an American, | |
| you might wish to use the zee pronunciation instead of zed. You can | |
| change the pronunciation of both the upper and lower case z with the | |
| following two commands: | |
| echo 90 zee >/speakup/characters | |
| echo 122 zee >/speakup/characters | |
| Let's examine the parts of the two previous commands. They are issued | |
| at the shell prompt, and could be placed in a startup script. | |
| The word echo tells the shell that you want to have it display the | |
| string of characters that follow the word echo. If you were to just | |
| type: | |
| echo hello. | |
| You would get the word hello printed on your screen as soon as you | |
| pressed the enter key. In this case, we are echoing strings that we | |
| want to be redirected into the sys system. | |
| The numbers 90 and 122 in the above echo commands are the ascii numeric | |
| values for the upper and lower case z, the characters we wish to change. | |
| The string zee is the pronunciation that we want Speakup to use for the | |
| upper and lower case z. | |
| The > symbol redirects the output of the echo command to a file, just | |
| like in DOS, or at the Windows command prompt. | |
| And finally, /speakup/i18n/characters is the file entry in the sys system | |
| where we want the output to be directed. Speakup looks at the numeric | |
| value of the character we want to change, and inserts the pronunciation | |
| string into an internal table. | |
| You can look at the whole table with the following command: | |
| cat /speakup/i18n/characters | |
| Speakup will then print out the entire character pronunciation table. I | |
| won't display it here, but leave you to look at it at your convenience. | |
| 13. Mapping Keys | |
| Speakup has the capability of allowing you to assign or "map" keys to | |
| internal Speakup commands. This section necessarily assumes you have a | |
| Linux kernel source tree installed, and that it has been patched and | |
| configured with Speakup. How you do this is beyond the scope of this | |
| manual. For this information, visit the Speakup web site at | |
| http://linux-speakup.org/. The reason you'll need the kernel source | |
| tree patched with Speakup is that the genmap utility you'll need for | |
| processing keymaps is in the | |
| /usr/src/linux-<version_number>/drivers/char/speakup directory. The | |
| <version_number> in the above directory path is the version number of | |
| the Linux source tree you are working with. | |
| So ok, you've gone off and gotten your kernel source tree, and patched | |
| and configured it. Now you can start manipulating keymaps. | |
| You can either use the | |
| /usr/src/linux-<version_number>/drivers/char/speakup/speakupmap.map file | |
| included with the Speakup source, or you can cut and paste the copy in | |
| section 4 into a separate file. If you use the one in the Speakup | |
| source tree, make sure you make a backup of it before you start making | |
| changes. You have been warned! | |
| Suppose that you want to swap the key assignments for the Speakup | |
| say_last_char and the Speakup say_first_char commands. The | |
| speakupmap.map lists the key mappings for these two commands as follows: | |
| spk key_pageup = say_first_char | |
| spk key_pagedown = say_last_char | |
| You can edit your copy of the speakupmap.map file and swap the command | |
| names on the right side of the = (equals) sign. You did make a backup, | |
| right? The new keymap lines would look like this: | |
| spk key_pageup = say_last_char | |
| spk key_pagedown = say_first_char | |
| After you edit your copy of the speakupmap.map file, save it under a new | |
| file name, perhaps newmap.map. Then exit your editor and return to the | |
| shell prompt. | |
| You are now ready to load your keymap with your swapped key assignments. | |
| Assuming that you saved your new keymap as the file newmap.map, you | |
| would load your keymap into the sys system like this: | |
| /usr/src/linux-<version_number>/drivers/char/speakup/genmap newmap.map | |
| >/speakup/keymap | |
| Remember to substitute your kernel version number for the | |
| <version_number> in the above command. Also note that although the | |
| above command wrapped onto two lines in this document, you should type | |
| it all on one line. | |
| Your say first and say last characters should now be swapped. Pressing | |
| speakup pagedown should read you the first non-whitespace character on | |
| the line your reading cursor is in, and pressing speakup pageup should | |
| read you the last character on the line your reading cursor is in. | |
| You should note that these new mappings will only stay in effect until | |
| you reboot, or until you load another keymap. | |
| One final warning. If you try to load a partial map, you will quickly | |
| find that all the mappings you didn't include in your file got deleted | |
| from the working map. Be extremely careful, and always make a backup! | |
| You have been warned! | |
| 14. Internationalizing Speakup | |
| Speakup indicates various conditions to the user by speaking messages. | |
| For instance, when you move to the left edge of the screen with the | |
| review keys, Speakup says, "left." | |
| Prior to version 3.1.0 of Speakup, all of these messages were in English, | |
| and they could not be changed. If you used a non-English synthesizer, | |
| you still heard English messages, such as "left" and "cursoring on." | |
| In version 3.1.0 or higher, one may load translations for the various | |
| messages via the /sys filesystem. | |
| The directory /speakup/i18n contains several collections of messages. | |
| Each group of messages is stored in its own file. | |
| The following section lists all of these files, along with a brief description | |
| of each. | |
| 14.1. Files Under the i18n Subdirectory | |
| * announcements: | |
| This file contains various general announcements, most of which cannot | |
| be categorized. You will find messages such as "You killed Speakup", | |
| "I'm alive", "leaving help", "parked", "unparked", and others. | |
| You will also find the names of the screen edges and cursor tracking modes | |
| here. | |
| * characters: | |
| See section 12 for a description of this file. | |
| * chartab: | |
| See section 12. Unlike the rest of the files in the i18n subdirectory, | |
| this one does not contain messages to be spoken. | |
| * colors: | |
| When you use the "say attributes" function, Speakup says the name of the | |
| foreground and background colors. These names come from the i18n/colors | |
| file. | |
| * ctl_keys: | |
| Here, you will find names of control keys. These are used with Speakup's | |
| say_control feature. | |
| * formatted: | |
| This group of messages contains embedded formatting codes, to specify | |
| the type and width of displayed data. If you change these, you must | |
| preserve all of the formatting codes, and they must appear in the order | |
| used by the default messages. | |
| * function_names: | |
| Here, you will find a list of names for Speakup functions. These are used | |
| by the help system. For example, suppose that you have activated help mode, | |
| and you pressed keypad 3. Speakup says: | |
| "keypad 3 is character, say next." | |
| The message "character, say next" names a Speakup function, and it | |
| comes from this function_names file. | |
| * key_names: | |
| Again, key_names is used by Speakup's help system. In the previous | |
| example, Speakup said that you pressed "keypad 3." | |
| This name came from the key_names file. | |
| * states: | |
| This file contains names for key states. | |
| Again, these are part of the help system. For instance, if you had pressed | |
| speakup + keypad 3, you would hear: | |
| "speakup keypad 3 is go to bottom edge." | |
| The speakup key is depressed, so the name of the key state is speakup. | |
| This part of the message comes from the states collection. | |
| 14.2. Loading Your Own Messages | |
| The files under the i18n subdirectory all follow the same format. | |
| They consist of lines, with one message per line. | |
| Each message is represented by a number, followed by the text of the message. | |
| The number is the position of the message in the given collection. | |
| For example, if you view the file /speakup/i18n/colors, you will see the | |
| following list: | |
| 0 black | |
| 1 blue | |
| 2 green | |
| 3 cyan | |
| 4 red | |
| 5 magenta | |
| 6 yellow | |
| 7 white | |
| 8 grey | |
| You can change one message, or you can change a whole group. | |
| To load a whole collection of messages from a new source, simply use | |
| the cp command: | |
| cp ~/my_colors /speakup/i18n/colors | |
| You can change an individual message with the echo command, | |
| as shown in the following example. | |
| The Spanish name for the color blue is azul. | |
| Looking at the colors file, we see that the name "blue" is at position 1 | |
| within the colors group. Let's change blue to azul: | |
| echo '1 azul' > /speakup/i18n/colors | |
| The next time that Speakup says message 1 from the colors group, it will | |
| say "azul", rather than "blue." | |
| In the future, translations into various languages will be made available, | |
| and most users will just load the files necessary for their language. | |
| 14.3. No Support for Non-Western-European Languages | |
| As of the current release, Speakup only supports Western European languages. | |
| Support for the extended characters used by languages outside of the Western | |
| European family of languages is a work in progress. | |
| 15. Using Speakup's Windowing Capability | |
| Speakup has the capability of defining and manipulating windows on the | |
| screen. Speakup uses the term "Window", to mean a user defined area of | |
| the screen. The key strokes for defining and manipulating Speakup | |
| windows are as follows: | |
| speakup + f2 -- Set the bounds of the window. | |
| Speakup + f3 -- clear the current window definition. | |
| speakup + f4 -- Toggle window silence on and off. | |
| speakup + keypad plus -- Say the currently defined window. | |
| These capabilities are useful for tracking a certain part of the screen | |
| without rereading the whole screen, or for silencing a part of the | |
| screen that is constantly changing, such as a clock or status line. | |
| There is no way to save these window settings, and you can only have one | |
| window defined for each virtual console. There is also no way to have | |
| windows automatically defined for specific applications. | |
| In order to define a window, use the review keys to move your reading | |
| cursor to the beginning of the area you want to define. Then press | |
| speakup + f2. Speakup will tell you that the window starts at the | |
| indicated row and column position. Then move the reading cursor to the | |
| end of the area to be defined as a window, and press speakup + f2 again. | |
| If there is more than one line in the window, Speakup will tell you | |
| that the window ends at the indicated row and column position. If there | |
| is only one line in the window, then Speakup will tell you that the | |
| window is the specified line on the screen. If you are only defining a | |
| one line window, you can just press speakup + f2 twice after placing the | |
| reading cursor on the line you want to define as a window. It is not | |
| necessary to position the reading cursor at the end of the line in order | |
| to define the whole line as a window. | |
| 16. Tools for Controlling Speakup | |
| The speakup distribution includes extra tools (in the tools directory) | |
| which were written to make speakup easier to use. This section will | |
| briefly describe the use of these tools. | |
| 16.1. Speakupconf | |
| speakupconf began life as a contribution from Steve Holmes, a member of | |
| the speakup community. We would like to thank him for his work on the | |
| early versions of this project. | |
| This script may be installed as part of your linux distribution, but if | |
| it isn't, the recommended places to put it are /usr/local/bin or | |
| /usr/bin. This script can be run by any user, so it does not require | |
| root privileges. | |
| Speakupconf allows you to save and load your Speakup settings. It works | |
| by reading and writing the /sys files described above. | |
| The directory that speakupconf uses to store your settings depends on | |
| whether it is run from the root account. If you execute speakupconf as | |
| root, it uses the directory /etc/speakup. Otherwise, it uses the directory | |
| ~/.speakup, where ~ is your home directory. | |
| Anyone who needs to use Speakup from your console can load his own custom | |
| settings with this script. | |
| speakupconf takes one required argument: load or save. | |
| Use the command | |
| speakupconf save | |
| to save your Speakup settings, and | |
| speakupconf load | |
| to load them into Speakup. | |
| A second argument may be specified to use an alternate directory to | |
| load or save the speakup parameters. | |
| 16.2. Talkwith | |
| Charles Hallenbeck, another member of the speakup community, wrote the | |
| initial versions of this script, and we would also like to thank him for | |
| his work on it. | |
| This script needs root privileges to run, so if it is not installed as | |
| part of your linux distribution, the recommended places to install it | |
| are /usr/local/sbin or /usr/sbin. | |
| Talkwith allows you to switch synthesizers on the fly. It takes a synthesizer | |
| name as an argument. For instance, | |
| talkwith dectlk | |
| causes Speakup to use the DecTalk Express. If you wish to switch to a | |
| software synthesizer, you must also indicate which daemon you wish to | |
| use. There are two possible choices: | |
| spd and espeakup. spd is an abbreviation for speechd-up. | |
| If you wish to use espeakup for software synthesis, give the command | |
| talkwith soft espeakup | |
| To use speechd-up, type: | |
| talkwith soft spd | |
| Any arguments that follow the name of the daemon are passed to the daemon | |
| when it is invoked. For instance: | |
| talkwith espeakup --default-voice=fr | |
| causes espeakup to use the French voice. | |
| Note that talkwith must always be executed with root privileges. | |
| Talkwith does not attempt to load your settings after the new | |
| synthesizer is activated. You can use speakupconf to load your settings | |
| if desired. | |
| GNU Free Documentation License | |
| Version 1.2, November 2002 | |
| Copyright (C) 2000,2001,2002 Free Software Foundation, Inc. | |
| Everyone is permitted to copy and distribute verbatim copies | |
| of this license document, but changing it is not allowed. | |
| 0. PREAMBLE | |
| The purpose of this License is to make a manual, textbook, or other | |
| functional and useful document "free" in the sense of freedom: to | |
| assure everyone the effective freedom to copy and redistribute it, | |
| with or without modifying it, either commercially or noncommercially. | |
| Secondarily, this License preserves for the author and publisher a way | |
| to get credit for their work, while not being considered responsible | |
| for modifications made by others. | |
| This License is a kind of "copyleft", which means that derivative | |
| works of the document must themselves be free in the same sense. It | |
| complements the GNU General Public License, which is a copyleft | |
| license designed for free software. | |
| We have designed this License in order to use it for manuals for free | |
| software, because free software needs free documentation: a free | |
| program should come with manuals providing the same freedoms that the | |
| software does. But this License is not limited to software manuals; | |
| it can be used for any textual work, regardless of subject matter or | |
| whether it is published as a printed book. We recommend this License | |
| principally for works whose purpose is instruction or reference. | |
| 1. APPLICABILITY AND DEFINITIONS | |
| This License applies to any manual or other work, in any medium, that | |
| contains a notice placed by the copyright holder saying it can be | |
| distributed under the terms of this License. Such a notice grants a | |
| world-wide, royalty-free license, unlimited in duration, to use that | |
| work under the conditions stated herein. The "Document", below, | |
| refers to any such manual or work. Any member of the public is a | |
| licensee, and is addressed as "you". You accept the license if you | |
| copy, modify or distribute the work in a way requiring permission | |
| under copyright law. | |
| A "Modified Version" of the Document means any work containing the | |
| Document or a portion of it, either copied verbatim, or with | |
| modifications and/or translated into another language. | |
| A "Secondary Section" is a named appendix or a front-matter section of | |
| the Document that deals exclusively with the relationship of the | |
| publishers or authors of the Document to the Document's overall subject | |
| (or to related matters) and contains nothing that could fall directly | |
| within that overall subject. (Thus, if the Document is in part a | |
| textbook of mathematics, a Secondary Section may not explain any | |
| mathematics.) The relationship could be a matter of historical | |
| connection with the subject or with related matters, or of legal, | |
| commercial, philosophical, ethical or political position regarding | |
| them. | |
| The "Invariant Sections" are certain Secondary Sections whose titles | |
| are designated, as being those of Invariant Sections, in the notice | |
| that says that the Document is released under this License. If a | |
| section does not fit the above definition of Secondary then it is not | |
| allowed to be designated as Invariant. The Document may contain zero | |
| Invariant Sections. If the Document does not identify any Invariant | |
| Sections then there are none. | |
| The "Cover Texts" are certain short passages of text that are listed, | |
| as Front-Cover Texts or Back-Cover Texts, in the notice that says that | |
| the Document is released under this License. A Front-Cover Text may | |
| be at most 5 words, and a Back-Cover Text may be at most 25 words. | |
| A "Transparent" copy of the Document means a machine-readable copy, | |
| represented in a format whose specification is available to the | |
| general public, that is suitable for revising the document | |
| straightforwardly with generic text editors or (for images composed of | |
| pixels) generic paint programs or (for drawings) some widely available | |
| drawing editor, and that is suitable for input to text formatters or | |
| for automatic translation to a variety of formats suitable for input | |
| to text formatters. A copy made in an otherwise Transparent file | |
| format whose markup, or absence of markup, has been arranged to thwart | |
| or discourage subsequent modification by readers is not Transparent. | |
| An image format is not Transparent if used for any substantial amount | |
| of text. A copy that is not "Transparent" is called "Opaque". | |
| Examples of suitable formats for Transparent copies include plain | |
| ASCII without markup, Texinfo input format, LaTeX input format, SGML | |
| or XML using a publicly available DTD, and standard-conforming simple | |
| HTML, PostScript or PDF designed for human modification. Examples of | |
| transparent image formats include PNG, XCF and JPG. Opaque formats | |
| include proprietary formats that can be read and edited only by | |
| proprietary word processors, SGML or XML for which the DTD and/or | |
| processing tools are not generally available, and the | |
| machine-generated HTML, PostScript or PDF produced by some word | |
| processors for output purposes only. | |
| The "Title Page" means, for a printed book, the title page itself, | |
| plus such following pages as are needed to hold, legibly, the material | |
| this License requires to appear in the title page. For works in | |
| formats which do not have any title page as such, "Title Page" means | |
| the text near the most prominent appearance of the work's title, | |
| preceding the beginning of the body of the text. | |
| A section "Entitled XYZ" means a named subunit of the Document whose | |
| title either is precisely XYZ or contains XYZ in parentheses following | |
| text that translates XYZ in another language. (Here XYZ stands for a | |
| specific section name mentioned below, such as "Acknowledgements", | |
| "Dedications", "Endorsements", or "History".) To "Preserve the Title" | |
| of such a section when you modify the Document means that it remains a | |
| section "Entitled XYZ" according to this definition. | |
| The Document may include Warranty Disclaimers next to the notice which | |
| states that this License applies to the Document. These Warranty | |
| Disclaimers are considered to be included by reference in this | |
| License, but only as regards disclaiming warranties: any other | |
| implication that these Warranty Disclaimers may have is void and has | |
| no effect on the meaning of this License. | |
| 2. VERBATIM COPYING | |
| You may copy and distribute the Document in any medium, either | |
| commercially or noncommercially, provided that this License, the | |
| copyright notices, and the license notice saying this License applies | |
| to the Document are reproduced in all copies, and that you add no other | |
| conditions whatsoever to those of this License. You may not use | |
| technical measures to obstruct or control the reading or further | |
| copying of the copies you make or distribute. However, you may accept | |
| compensation in exchange for copies. If you distribute a large enough | |
| number of copies you must also follow the conditions in section 3. | |
| You may also lend copies, under the same conditions stated above, and | |
| you may publicly display copies. | |
| 3. COPYING IN QUANTITY | |
| If you publish printed copies (or copies in media that commonly have | |
| printed covers) of the Document, numbering more than 100, and the | |
| Document's license notice requires Cover Texts, you must enclose the | |
| copies in covers that carry, clearly and legibly, all these Cover | |
| Texts: Front-Cover Texts on the front cover, and Back-Cover Texts on | |
| the back cover. Both covers must also clearly and legibly identify | |
| you as the publisher of these copies. The front cover must present | |
| the full title with all words of the title equally prominent and | |
| visible. You may add other material on the covers in addition. | |
| Copying with changes limited to the covers, as long as they preserve | |
| the title of the Document and satisfy these conditions, can be treated | |
| as verbatim copying in other respects. | |
| If the required texts for either cover are too voluminous to fit | |
| legibly, you should put the first ones listed (as many as fit | |
| reasonably) on the actual cover, and continue the rest onto adjacent | |
| pages. | |
| If you publish or distribute Opaque copies of the Document numbering | |
| more than 100, you must either include a machine-readable Transparent | |
| copy along with each Opaque copy, or state in or with each Opaque copy | |
| a computer-network location from which the general network-using | |
| public has access to download using public-standard network protocols | |
| a complete Transparent copy of the Document, free of added material. | |
| If you use the latter option, you must take reasonably prudent steps, | |
| when you begin distribution of Opaque copies in quantity, to ensure | |
| that this Transparent copy will remain thus accessible at the stated | |
| location until at least one year after the last time you distribute an | |
| Opaque copy (directly or through your agents or retailers) of that | |
| edition to the public. | |
| It is requested, but not required, that you contact the authors of the | |
| Document well before redistributing any large number of copies, to give | |
| them a chance to provide you with an updated version of the Document. | |
| 4. MODIFICATIONS | |
| You may copy and distribute a Modified Version of the Document under | |
| the conditions of sections 2 and 3 above, provided that you release | |
| the Modified Version under precisely this License, with the Modified | |
| Version filling the role of the Document, thus licensing distribution | |
| and modification of the Modified Version to whoever possesses a copy | |
| of it. In addition, you must do these things in the Modified Version: | |
| A. Use in the Title Page (and on the covers, if any) a title distinct | |
| from that of the Document, and from those of previous versions | |
| (which should, if there were any, be listed in the History section | |
| of the Document). You may use the same title as a previous version | |
| if the original publisher of that version gives permission. | |
| B. List on the Title Page, as authors, one or more persons or entities | |
| responsible for authorship of the modifications in the Modified | |
| Version, together with at least five of the principal authors of the | |
| Document (all of its principal authors, if it has fewer than five), | |
| unless they release you from this requirement. | |
| C. State on the Title page the name of the publisher of the | |
| Modified Version, as the publisher. | |
| D. Preserve all the copyright notices of the Document. | |
| E. Add an appropriate copyright notice for your modifications | |
| adjacent to the other copyright notices. | |
| F. Include, immediately after the copyright notices, a license notice | |
| giving the public permission to use the Modified Version under the | |
| terms of this License, in the form shown in the Addendum below. | |
| G. Preserve in that license notice the full lists of Invariant Sections | |
| and required Cover Texts given in the Document's license notice. | |
| H. Include an unaltered copy of this License. | |
| I. Preserve the section Entitled "History", Preserve its Title, and add | |
| to it an item stating at least the title, year, new authors, and | |
| publisher of the Modified Version as given on the Title Page. If | |
| there is no section Entitled "History" in the Document, create one | |
| stating the title, year, authors, and publisher of the Document as | |
| given on its Title Page, then add an item describing the Modified | |
| Version as stated in the previous sentence. | |
| J. Preserve the network location, if any, given in the Document for | |
| public access to a Transparent copy of the Document, and likewise | |
| the network locations given in the Document for previous versions | |
| it was based on. These may be placed in the "History" section. | |
| You may omit a network location for a work that was published at | |
| least four years before the Document itself, or if the original | |
| publisher of the version it refers to gives permission. | |
| K. For any section Entitled "Acknowledgements" or "Dedications", | |
| Preserve the Title of the section, and preserve in the section all | |
| the substance and tone of each of the contributor acknowledgements | |
| and/or dedications given therein. | |
| L. Preserve all the Invariant Sections of the Document, | |
| unaltered in their text and in their titles. Section numbers | |
| or the equivalent are not considered part of the section titles. | |
| M. Delete any section Entitled "Endorsements". Such a section | |
| may not be included in the Modified Version. | |
| N. Do not retitle any existing section to be Entitled "Endorsements" | |
| or to conflict in title with any Invariant Section. | |
| O. Preserve any Warranty Disclaimers. | |
| If the Modified Version includes new front-matter sections or | |
| appendices that qualify as Secondary Sections and contain no material | |
| copied from the Document, you may at your option designate some or all | |
| of these sections as invariant. To do this, add their titles to the | |
| list of Invariant Sections in the Modified Version's license notice. | |
| These titles must be distinct from any other section titles. | |
| You may add a section Entitled "Endorsements", provided it contains | |
| nothing but endorsements of your Modified Version by various | |
| parties--for example, statements of peer review or that the text has | |
| been approved by an organization as the authoritative definition of a | |
| standard. | |
| You may add a passage of up to five words as a Front-Cover Text, and a | |
| passage of up to 25 words as a Back-Cover Text, to the end of the list | |
| of Cover Texts in the Modified Version. Only one passage of | |
| Front-Cover Text and one of Back-Cover Text may be added by (or | |
| through arrangements made by) any one entity. If the Document already | |
| includes a cover text for the same cover, previously added by you or | |
| by arrangement made by the same entity you are acting on behalf of, | |
| you may not add another; but you may replace the old one, on explicit | |
| permission from the previous publisher that added the old one. | |
| The author(s) and publisher(s) of the Document do not by this License | |
| give permission to use their names for publicity for or to assert or | |
| imply endorsement of any Modified Version. | |
| 5. COMBINING DOCUMENTS | |
| You may combine the Document with other documents released under this | |
| License, under the terms defined in section 4 above for modified | |
| versions, provided that you include in the combination all of the | |
| Invariant Sections of all of the original documents, unmodified, and | |
| list them all as Invariant Sections of your combined work in its | |
| license notice, and that you preserve all their Warranty Disclaimers. | |
| The combined work need only contain one copy of this License, and | |
| multiple identical Invariant Sections may be replaced with a single | |
| copy. If there are multiple Invariant Sections with the same name but | |
| different contents, make the title of each such section unique by | |
| adding at the end of it, in parentheses, the name of the original | |
| author or publisher of that section if known, or else a unique number. | |
| Make the same adjustment to the section titles in the list of | |
| Invariant Sections in the license notice of the combined work. | |
| In the combination, you must combine any sections Entitled "History" | |
| in the various original documents, forming one section Entitled | |
| "History"; likewise combine any sections Entitled "Acknowledgements", | |
| and any sections Entitled "Dedications". You must delete all sections | |
| Entitled "Endorsements". | |
| 6. COLLECTIONS OF DOCUMENTS | |
| You may make a collection consisting of the Document and other documents | |
| released under this License, and replace the individual copies of this | |
| License in the various documents with a single copy that is included in | |
| the collection, provided that you follow the rules of this License for | |
| verbatim copying of each of the documents in all other respects. | |
| You may extract a single document from such a collection, and distribute | |
| it individually under this License, provided you insert a copy of this | |
| License into the extracted document, and follow this License in all | |
| other respects regarding verbatim copying of that document. | |
| 7. AGGREGATION WITH INDEPENDENT WORKS | |
| A compilation of the Document or its derivatives with other separate | |
| and independent documents or works, in or on a volume of a storage or | |
| distribution medium, is called an "aggregate" if the copyright | |
| resulting from the compilation is not used to limit the legal rights | |
| of the compilation's users beyond what the individual works permit. | |
| When the Document is included in an aggregate, this License does not | |
| apply to the other works in the aggregate which are not themselves | |
| derivative works of the Document. | |
| If the Cover Text requirement of section 3 is applicable to these | |
| copies of the Document, then if the Document is less than one half of | |
| the entire aggregate, the Document's Cover Texts may be placed on | |
| covers that bracket the Document within the aggregate, or the | |
| electronic equivalent of covers if the Document is in electronic form. | |
| Otherwise they must appear on printed covers that bracket the whole | |
| aggregate. | |
| 8. TRANSLATION | |
| Translation is considered a kind of modification, so you may | |
| distribute translations of the Document under the terms of section 4. | |
| Replacing Invariant Sections with translations requires special | |
| permission from their copyright holders, but you may include | |
| translations of some or all Invariant Sections in addition to the | |
| original versions of these Invariant Sections. You may include a | |
| translation of this License, and all the license notices in the | |
| Document, and any Warranty Disclaimers, provided that you also include | |
| the original English version of this License and the original versions | |
| of those notices and disclaimers. In case of a disagreement between | |
| the translation and the original version of this License or a notice | |
| or disclaimer, the original version will prevail. | |
| If a section in the Document is Entitled "Acknowledgements", | |
| "Dedications", or "History", the requirement (section 4) to Preserve | |
| its Title (section 1) will typically require changing the actual | |
| title. | |
| 9. TERMINATION | |
| You may not copy, modify, sublicense, or distribute the Document except | |
| as expressly provided for under this License. Any other attempt to | |
| copy, modify, sublicense or distribute the Document is void, and will | |
| automatically terminate your rights under this License. However, | |
| parties who have received copies, or rights, from you under this | |
| License will not have their licenses terminated so long as such | |
| parties remain in full compliance. | |
| 10. FUTURE REVISIONS OF THIS LICENSE | |
| The Free Software Foundation may publish new, revised versions | |
| of the GNU Free Documentation License from time to time. Such new | |
| versions will be similar in spirit to the present version, but may | |
| differ in detail to address new problems or concerns. See | |
| https://www.gnu.org/copyleft/. | |
| Each version of the License is given a distinguishing version number. | |
| If the Document specifies that a particular numbered version of this | |
| License "or any later version" applies to it, you have the option of | |
| following the terms and conditions either of that specified version or | |
| of any later version that has been published (not as a draft) by the | |
| Free Software Foundation. If the Document does not specify a version | |
| number of this License, you may choose any version ever published (not | |
| as a draft) by the Free Software Foundation. | |
| ADDENDUM: How to use this License for your documents | |
| To use this License in a document you have written, include a copy of | |
| the License in the document and put the following copyright and | |
| license notices just after the title page: | |
| Copyright (c) YEAR YOUR NAME. | |
| Permission is granted to copy, distribute and/or modify this document | |
| under the terms of the GNU Free Documentation License, Version 1.2 | |
| or any later version published by the Free Software Foundation; | |
| with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. | |
| A copy of the license is included in the section entitled "GNU | |
| Free Documentation License". | |
| If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts, | |
| replace the "with...Texts." line with this: | |
| with the Invariant Sections being LIST THEIR TITLES, with the | |
| Front-Cover Texts being LIST, and with the Back-Cover Texts being LIST. | |
| If you have Invariant Sections without Cover Texts, or some other | |
| combination of the three, merge those two alternatives to suit the | |
| situation. | |
| If your document contains nontrivial examples of program code, we | |
| recommend releasing these examples in parallel under your choice of | |
| free software license, such as the GNU General Public License, | |
| to permit their use in free software. | |
| The End. |