v7 man page for pause

PAUSE(2)							System Calls Manual							  PAUSE(2)

NAME
       pause - stop until signal

SYNOPSIS
       pause( )

DESCRIPTION
       Pause never returns normally.  It is used to give up control while waiting for a signal from kill(2) or alarm(2).

SEE ALSO
       kill(1), kill(2), alarm(2), signal(2), setjmp(3)

ASSEMBLER
       (pause = 29.)
       sys pause

																	  PAUSE(2)