Nits.
 [jmk] --rw-rw-r-- M 845139 glenda sys 12029 Dec  6 09:47 sys/man/3/proc
	/n/sourcesdump/2005/1206/plan9/sys/man/3/proc:360,371 - 
	/n/sourcesdump/2005/1207/plan9/sys/man/3/proc:360,371
	  .IR deadline .
	  The moment of release is dictated by the
	  .I period
	- and whther the process is
	+ and whether the process is
	  .I sporadic
	  or not.
	  Non-sporadic processes are called
	  .I periodic
	- and they are released precisely at intervals of their period (but perods can be skipped
	+ and they are released precisely at intervals of their period (but periods can be skipped
	  if the process blocks on I/O).  Sporadic processes are released whenever they become
	  runnable (after being blocked by
	  .IR sleep ()