IBM System/36 BASIC

IBM System/36 BASIC was an interpreter for the IBM System/36 midrange computer.

Like other BASICs licensed by IBM, S/36 BASIC was compatible with ANSI Minimal BASIC and had considerable extensions to it in order to be useful with the host.

These core BASIC statements, functions, and controls were used:

 DATA
 DIM
 END
 FOR...NEXT
 GOSUB...RETURN
 GOTO
 IF...THEN
 INPUT
 LET
 ON...GOTO
 PRINT
 PRINT USING
 READ
 REM
 STOP

More advanced IBM-supplied statements included:

 ON ERROR
 OPTIONS
 OPEN
 CLOSE
 WRITE
 REWRITE
 DELETE
 IMAGE
 FORM
 DEF FN..FNEND