bsd man page for wait

WAIT(3F)																  WAIT(3F)

NAME
       wait - wait for a process to terminate

SYNOPSIS
       integer function wait (status)
       integer status

DESCRIPTION
       Wait  causes  its  caller to be suspended until a signal is received or one of its child processes terminates.  If any child has terminated
       since the last wait, return is immediate; if there are no children, return is immediate with an error code.

       If the returned value is positive, it is the process ID of the child and status is its termination status (see wait(2)).  If  the  returned
       value is negative, it is the negation of a system error code.

FILES
       /usr/lib/libU77.a

SEE ALSO
       wait(2), signal(3F), kill(3F), perror(3F)

4.2 Berkeley Distribution					   May 15, 1985 							  WAIT(3F)