Program flow control.  Stop executing the current program and enter direct mode.

 

Remarks

This statement is normally optional as the program will terminate after executing the last line of the program.  However it is required when the program logically ends in the middle of the program listing.  That is, when some code (typically subroutines) that should not be directly executed follow the logical end. 

 

Example:

10 GOSUB 100
20 PRINT "HELLO "; N$
30 END
100 N$="" : PRINT "WHAT'S YOUR NAME?";
110 INPUT N$
120 IF LEN(N$)<1 OR LEN(N$) > 20 THEN GOTO 100
120 RETURN

 

In the example, the END on line 30 is required to prevent execution from continuing into the subroutine that starts on line 100.

 

* END may be entered as a command in direct mode, but it has no effect.  Another quirk is that CONT is allowed after the program executes END.  This would be bad in most programs, like the example, because it would eventually cause a RETURN WITHOUT GOSUB error.

 

EXIT, LOOP, NEXT, RESUME, RETURN, STOP

 

BOOT, DLOAD, LOAD, GOSUB, GOTO, RUN, USR, SYS 

 

CONT, LIST, NEW