Explore: Gosub

statement following the GOSUB, either after a colon, or on the next line. This is used to implement subroutines. ON ... GOTO/GOSUB chooses where to jump

and GOSUB could take an expression rather than just a line number, providing an assigned GOTO rather than the switch statement of the GOTO/GOSUB ... OF

store the line numbers of looping statements (FOR...NEXT) and subroutines (GOSUB...RETURN). Finally, the end of BASIC memory usage is indicated by an address

Defines labels in CONFIG.SYS as jump targets for CHAIN, DRSWITCH, GOTO, GOSUB and SWITCH directives. ; (DOS 6.0 and DR DOS 6.0 and higher) Similar to

subroutines via the GOSUB and RETURN statements Conditional flow-control via IF/THEN statement Calculated flow-control via the GOTO/OF and GOSUB/OF statements

TRace ON. It was used primarily for debugging line-numbered BASIC GOTO and GOSUB statements. In text-mode environments such as the TRS-80 or DOS, it would

27 GOSUB 100: A=E: PRINT "EVEN BRICK";: GOSUB 100: B=E: PRINT "ODD BRICK";: GOSUB 100: C=E: PRINT "PADDLE";: GOSUB 100: D=E : PRINT "BALL";: GOSUB 100

of the command were needed, such as GO{Shift-S} (GO♥) being required for GOSUB. Some commands had no abbreviated form, either due to brevity or ambiguity

features in addition to older-style programming. Implicit variables, suffixes, GOSUB / RETURN, numeric labels and other features are allowed in this dialect

identified with a number, which could be used as the target of a GOTO or GOSUB transfer. Only line editing commands were provided. It was often beneficial