V3/usr/man/man4/rk.4

Find at most related files.
including files from this version of Unix. 
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NAME		rk  --  RK-11/RK03 (or RK05) disk
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DESCRIPTION	rk?___
refers to an entire RK03 disk as a single sequentially-addressed
file.
Its 256-word blocks are numbered 0 to 4871.
Like the RF disk and the tape files, its
addressing is block-oriented.
Consult the rf(IV) section.
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FILES		/dev/rk0	user available drive
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/dev/rk1	/usr file system
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/dev/rk2	/sys file system
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/dev/rk3	/crp file system
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SEE ALSO	rf(IV), tc(IV)
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BUGS		See rf(IV)