User`s manual

8–20 IBM Proprinter Emulation
Condensed Print Select
ASCII Code SI ESC SI
Hex Code 0F 1B 0F
Dec Code 15 27 15
Purpose Selects up to 20 characters per inch (cpi) condensed print format.
Discussion The condensed print command SI affects all subsequent characters. After
receiving code SI, all characters are printed in condensed print until reset
by the Condensed Print Cancel command, DC2, printer reset, or a new
print mode command. The Proprinter SI code (hex 0F) is equivalent to
the ESC SI code. When condensed printing is selected, the following
character pitches go into effect:
Printing at 5 cpi changes to 8.55 cpi.
Printing at 10 cpi changes to 17.1 cpi.
Printing at 12 cpi changes to 20 cpi.(Be sure the printer is printing at 12
cpi before enabling compressed print.)
Condensed print can occur at any place in the datastream and is acted upon
immediately.
Example The following sample program illustrates condensed character printing
and reset.