040000 tree 40260110841e4d54ef6a2421edb77a5f7cf6531b	Data-Structures
040000 tree bb004fce991b4e54307f06c0eed46c8bc2b61910	Expedited-Grace-Periods
040000 tree 6d9e41f4e8ce9856af7c9059a1c0c87cf8f06825	Memory-Ordering
040000 tree 9a0deae73d91444c6578236d25010d150553c02f	Requirements