STOP
The STOP command, when encountered in a procedure, stops all the procedures
that are currently active and causes the program to resume reading from the
keyboard.
When entered from the keyboard, the STOP is regarded as an unrecognized command. (Use EXIT to stop the program.)
Let FILEA, FILEB, and FILEC be the following procedures.
(FILEA) (FILEB) (FILEC) A1; B1; C1; A2; START FILEC; C2; A3; B2; EXIT; START FILEB; B3; C3; A4; STOP; A5; B4;The command
START FILEAis equivalent to the sequence of commands
(A1) (A2) (A3) (B1) (C1) (C2) (B2) (B3)
The EXIT and STOP commands are used mostly for debugging procedures. (When
debugging a procedure, it is not always necessary to read all the way through
it.)