Xerox 4213 User Manual

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LJ SERIES 2D EMULATION
Most font commands have two versions, one for the primary font
and another for the secondary font.  Once selected, it is possible
to switch between them using the single-byte control codes Shift
In (SI) (hexadecimal 0F, decimal 15) and Shift Out (SO)
(hexadecimal 0E, decimal 14).
The primary font is the default font.
Font characteristics
A font is a set of printable characters that have common features:
Orientation
Symbol set
Font source
Spacing.
Pitch
Height
Style
Stroke weight
Typeface.
Orientation
The orientation of a font defines whether the font characters are
printed parallel to the short edge of the paper (portrait
orientation) or the long edge (landscape orientation).
Note:  The Printer Status Sheet identifies the fonts by their
orientation. Choosing a portrait font automatically causes the
printer to print in portrait orientation; landscape fonts function
likewise.
Text orientations cannot be mixed in the LJ series 2D emulation.
Therefore once the orientation is selected, only fonts of that
orientation may be printed on a single page.  The top, left, and
right margins apply to different edges of the paper depending on
whether portrait or landscape orientation is selected.
Selecting the orientation of a font also affects the coordinate
system used to describe a particular point on the page, as shown
in figures 3-1 and 3-2.
3-2
XEROX 4213 LASER PRINTER PROGRAMMER REFERENCE