User`s guide

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This mode controls which horizontal pitch formats text on the line.
When DECPSM is set (on), the printer uses the default horizontal
pitch determined by the current font. When DECPSM is reset (off),
the printer uses the horizontal pitch specified by the DECSHORP
sequence. (The DECSHORP sequence is discussed later in this
manual.) The default state of DECPSM is reset (off).
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This mode controls the type of intercharacter spacing used: propor-
tional or monospacing. When DECPSP is set (on), the printer uses
the proportional spacing value built into the current font. (The current
font must have proportional spacing in its attributes.) When DECPSP
is reset (off), the printer returns to monospacing and the spacing val-
ues return to those in effect before the proportional spacing was
selected. The default state of DECPSP is reset (off).
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This mode places the origin point for the page. When DECOPM is set
(on), the origin is the top left corner of the physical page. When the
origin placement mode is reset (off), the origin is placed 0.25"/6.35
mm from the left edge and 0.25"/6.35 mm from the top edge of the
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Set DECPSM
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Reset DECPSM
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Set DECPSP
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Reset DECPSP