Pentax PocketJet 3 User Manual page 25

Form Length:
This command can be used to set the form length of a 'Custom'
size page. You may specify the vertical print area in text lines
as defined by the 'Text Line Spacing' setting, or in inches.
If using the 'Lines' method for setting "custom" form length, the
actual vertical space on the page is determined by the vertical
space per line as determined by the 'Text Line Spacing'
command. The minimum value allowed is the number of lines
that would equal at least one inch of print because this is the
minimum length of paper that will feed properly through the
printer. For example, if your current 'Text Line Spacing' is set
to 6 lines per inch, you must specify at least '6' lines of form
length. The maximum setting is 127 lines. For 6 lines per inch,
that will provide a page of a little more than 21 inches in
length.
If using the 'Inches' method for setting form length, the actual
vertical space on the page is rounded down if needed to create
an even number of print lines as determined by the 'Text Line
Spacing' command. For example, if your 'Text Line Spacing'
is set to 6 lines per inch, and you specify 9.6 inches, the
application will determine that 57 lines could be printed in this
space, and change your inch value to (1/6 x 57) and the
display a form length of 9.5 inches.
If you switch modes from 'Lines' to 'Inches', the form length will
be recalculated in inches and displayed accordingly. If you
switch from 'Inches' to 'Lines', the form length will also be
recalculated and displayed as the number text lines that will
be printed.
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