LISTO

Introduction

A command which controls the appearance of a LISTed program. The command controls the setting of the three least significant bits of the format control byte which can, therefore, be set to an integer 0 to 7 (0 for all three bits 0, 7 for all three bits 1).

Bit Settings

Bit Function
0If Bit 0 is set, a space will be printed between the line number and the remainder of the line. (All leading spaces are stripped when the line is originally entered).
1If Bit 1 is set, two extra spaces will be printed out on lines between FOR and NEXT. Two extra spaces will be printed for each depth of nesting.
2If Bit 2 is set two extra spaces will be printed out on lines between REPEAT and UNTIL. Two extra spaces will be printed for each depth of nesting.

The default setting of LISTO is 7. This will give a properly formatted listing. The indentation of the FOR...NEXT and REPEAT...UNTIL lines is done in the correct manner, in that the NEXT is aligned with the FOR and the REPEAT with the UNTIL. 

LISTO 7

will give 

 10 A=20
 20 TEST$="FRED"
 30 FOR I=1 TO A
 40   Z=2^I
 50   PRINT I,Z
 60   REPEAT
 70     PRINT TEST$
 80     TEST$=LEFT$(TEST$,LEN(TEST$)-1)
 90   UNTIL LEN(TEST$)=0
100 NEXT
110 END

at the other extreme 

LISTO 0

will give 

 10A=20
 20TEST$="FRED"
 30FOR I=1 TO A
 40Z=2^I
 50PRINT I,Z
 60REPEAT
 70PRINT TEST$
 80TEST$=LEFT$(TEST$,LEN(TEST$)-1)
 90UNTIL LEN(TEST$)=0
100NEXT
110END

and 

LISTO 2

will give 

 10A=20
 20TEST$="FRED"
 30FOR I=1 TO A
 40  Z=2^Z
 50  PRINT I,Z
 60  REPEAT
 70  PRINT TEST$
 80  TEST$=LEFT$(TEST$,LEN(TEST$)-1)
 90  UNTIL LEN(TEST$)=0
100NEXT
110END

Syntax

LISTO <n-const>

Associated Keywords