52 User’s Guide
Italics
To highlight a phrase can be done by printing it in italics:
Setting MSB (7/8 bit Commands)
The other method of printing italics is to set the MSB (Most Significant
Bit) to 1.
This limits the range of the CHR$ codes to the area from 128 to 255
decimal. If this command is used, all characters will be printed in italics
(even if ESC 5 is sent) until the MSB is reset which means that bit 8 will
be set as it is sent from a computer.
Also bit 8 (MSB) can be set to 0. This means that characters from the lower
half of the character set (0 to 127) can be printed.
Proportional Spacing
To give text a more professional, typeset look, use proportional spacing.
On switching off the proportional mode, the printer returns to its previous
settings.
Note:
This mode does not work with compressed or elite
printing. If proportional is set together with 17.1
CPI, proportional text is printed, but in 10 CPI.
Italics Decimal Hex ASCII Comp
Begin Italics printing 27 52 1B 34 ESC 4 F
Stop Italics printing 27 53 1B 35 ESC 5 F
Setting MSB Decimal Hex. ASCII Comp.
Set MSB to 1 27 62 1B 3E ESC > F
Reset MSB 27 35 1B 23 ESC # F
Set MSB to 0 27 61 1B 3D ESC = F
Proportional spacing Decimal Hex. ASCII Comp.
Begin proportional spacing 27 112 49 1B 70 31 ESC p 1 F
Stop proportional spacing 27 112 48 1B 70 30 ESC p 0 F
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