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You will note that this program avoids the printer’s double-parenthesis
commands. To change colours, for example, it uses the escape sequence
E$: “r”;
CHR$(n), where E$ is predefined as CHR$(27), instead of the
equivalent command ((C))n. The double-parenthesis commands are great
for embedding in documents, but they are less convenient in programs. In
their simplest form they cannot be listed; instead of listing them, the printer
executes them.
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’ Set control codes
E$-CHR$(27)
‘Escape code
D$-E$+“xO”
‘Draft quality
N$-E$t”xl” ‘Near letter quality
C$-E$t”kO”+N$
‘Courier
S$-E$t”kl”tN$ ‘Sanserif
Ol$-E$+“k2”+N$
‘Orator with small capitals
028sE$+“k3”+N$ ‘Orator with lower case
H$KHR$(B)
‘Horizontal tab
P$-E$+“P”
‘Pica pitch
’ Start printing
WIDTH “LPTl * ” ,255
LPRINT E$;“D”;CHR$(3);CHR$(20);CHR$(O) ‘Set HT
LPRINT C$; “Type styles are : ”
LPRINT H$ ; D$ ; “Draft characters, ”
LPRINT H$; C$; “Courier characters, ”
LPRINT H$; S$ ; “Sanseri f characters, ”
LPRINT H$;Ol$;“Orator with small capitals, or H
LPRINT H$;02$; ”
with lower case characters,”
LPRINT E$ ; “4” ; ‘Select italics
LPRINT H$;02$;“and “;Ol$;“italics “;S$;“for “;
LPRINT C$;“all “;D$;“styles.”
LPRINT E$ ; “5”
‘Cancel italics
LPRINT C$; “Print pitches are : ”
LPRINT H$;P$;“Pica pitch,“;
LPRINT H$;E$; “M”; “Elite pitch, ”
LPRINT H$;CHR$(15); ‘Condensed pitch
LPRINT P$; “Condensed pica pitch, ‘I;
LPRINT H$ ; E$ ; “M” ;
“Condensed elite pitch,“;
LPRINT P$; ‘Pica pitch
LPRINT CHR$ ( 18)
‘Cancel condensed print
LPRINT H$;E$; “~1”;
‘Select proportional spacing
LPRINT “Proportional spacing for all pitches,”
LPRINT E$ ; “~0”
‘Cancel proportional spacing
LPRINT H$ ; E$ ; “Wl ” ; “Expanded, ” ; E$ ; “WO” ;
LPRINT E$ ; “~1” ; “Doub 1 e-height , ” ; E$ ; “~0 ”
LPRINT H$;E$;“h”;CHR$(l);“Double-sized,”
LPRINT H$;E$;“h”;CHR$(2);“Quad-sized.“;
LPRIN’T E$ ; “h” ; CHR$ (0 )
LPRINT :LPRINT :LPRINT
LPRINT C$; “Colour printing:”
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