docs: Added UNIX V10 Manuals

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+.pa 1
+.he 'WAIT (II)'9/4/72'WAIT (II)'
+.ti 0
+NAME		wait  --  wait for process to die
+.sp
+.ti 0
+SYNOPSIS	sys wait  / wait = 7.
+.br
+(process ID in r0)
+.br
+(termination status/user status in r1)
+.sp
+.ti 0
+DESCRIPTION	wait____
+causes its caller to delay until one of its child
+processes terminates.
+If any child has died since the last wait____, return is immediate;
+if there are no children, return is immediate with
+the error bit set.
+In the case of several children several wait____s are needed
+to learn of all the deaths.
+.sp
+If the error bit is not set on return,
+the r1 high byte contains the low byte of the
+child process r0 when it terminated.
+The r1 low byte contains the termination status
+of the process from the following list:
+.sp
+   0	exit
+   1	bus error
+   2	illegal instruction
+   3	trace trap
+   4	IOT trap
+   5	power fail trap
+   6	EMT trap
+   7	bad system call
+   8	PIR interrupt
+   9	floating point exception
+  10	memory violation
+  11	quit
+  12	interrupt
+  13 	kill (see kill(II))
+  14	User I/O (not currently possible)
+ +16	core image produced
+.sp
+.ti 0
+SEE ALSO	exit(II), fork(II)
+.sp
+.ti 0
+DIAGNOSTICS	error bit
+(c-bit) on if no children not previously waited for.
+.sp
+.ti 0
+BUGS		A child
+which dies, but is never
+waited for consumes
+a slot in the process table.
+When this table is full,
+the system is effectively hung.