Commodore PET User Manual page 109

C=44:FOR 1=1
440 442 44
442 44 440
44 440 442
440 442 44
442 44 44';::1
44 44';::1 442
440 442 44
442 44
44~~1
44 440 442
440 442 44
442 44 440
44 440 442
440 442 44
442 44 440
44 44€1 442
440 442 44
442 44 44';::1
44 44';::1 442
44~~1
442 44
442 44 44€1
F'HEIoJ ! HEl·"
!
F.:EAII'r'.
TO 200: ''?C; : NEXT: ?"PHEW! "
440 442 44 440 442 44 440
442 44 440 442 44 440 442
44 440 442 44 440 442 44
440 442 44 440 442 44 440
442 44 440 442 44 440 442
44 440 442 44 440 442 44
440 442 44 440 442 44 440
442 44 440 442 44 440 442
44 440 442 44 440 442 44
440 442 44 440 442 44 440
442 44 440 442 44 440 442
44 440 442 44 440 442 44
440 442 44 440 442 44 440
442 44 440 442 44 440 442
44 440 442 44 440 442 44
440 442 44 440 442 44 440
442 44 440 442 44 440 442
44 440 442 44 440 442 44
440 442 44 440 442 44 440
442 44 440 442 44 440 442
Some of the digits from the previous 2001 display were not blanked out.
PET BASIC uses a skip (cursor rightl character, not blanks, between fields.
When you are printing over existing data, charaeters between fields - or
characters in tabbed format - are not erased. Aiso note that there is a remain-
ing "HEW'''; PET BASIC prints the "PHEW!" but leaves the remaining positions of
the line just as they were; it does not blank the rest of the line, This ean be a
great advantage when you are adding to data already on the sereen, and you
should bear this capability in mind. For the display program line. however. it is
leaving extraneous characters in the display,
Programmed Cursor Control
To remove extraneous eharaeters from the display, you ean have the
program elear the sereen before printing a new display. To do this. insert a
PRINT CLEAR SCREEN literai ahead of the FOR, ' , NEXT loop:
C=44 :
'?"
::1" :
FOF: 1'" 1 TO 2(10: ?C$ , : : ~jE~<:T : ?" F'HEl·J
! "
'Clear Screen (shift of ClR/HOME key)
96