Characters In Commands - OKIDATA 120 Handbook

The CHR$(14) code is a non-printing control code that tells
your printer to print in double-width size. The printer reads
the number 14 as a Commodore ASCII decimal code num-
ber, a standard code system used by Commodore com-
puters. Notice the CHR$ code and the quotation mark are
separated by a semicolon.
Sometimes, for more complex features, the OKIDATA 120
uses combinations of CHR$ codes. The first code in this
combination is usually CHR$(27), called the "ESCAPE"
code. This code tells the printer to interpret the codes that
follow as part of an instruction. For example:
10 OPEN 1,<';
20 PRINT#1,"THIS CODE ";CHR$(27);CHR$(67);
"STARTS UNDERLINING,"
30 PRINT#1,"AND THIS CODE ";CHR$(27);CHR$(61l);
"STOPS IT."
<';0 CLOSE1
TH I S CODE
S1B.~T~l)J~J!_~_8.J::!.I.NI~.g
..
L
8-'~JL
TH.I.!2. __
!;' ; ;P...R' s .
STOPS IT.
- Characters in commands ________________
..lJ
22
Commodore ASCII decimal code numbers 32 through 126
represent printable characters, including letters, numbers
and symbols. The chart in Appendix C shows these charac-
ters and codes. Using a PRINT# with one of these codes
causes it to print the corresponding character. For example,
CHR$(65) equals the letter "A":
10 OPEN 1,<';
20 PRINT#l CHR$(65)
causes the letter "A" to be printed.
This works in reverse, too. When an ASCII decimal code
used in a command also represents a printable character,
you can substitute the decimal number with the actual
character, surrounded by quotes. To clarify this, we'll use