HP PCL/PJL reference (PCL 5 Printer Language) - Technical Reference Manual Part II

18-12 The Picture Frame EN
HP-GL/2 Plot Vertical Size
This command specifies the vertical size of the HP-GL/2 drawing
being imported.
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* c # L
# =The vertical size in inches
Default = height of the currently selected picture frame
Range = 0 to 32767 (valid to 4 decimal places)
The vertical HP-GL/2 plot size value determines the vertical scaling
factor used to fit the drawing into the PCL Picture Frame. For
example, if the vertical HP-GL/2 plot size is specified as 7 inches
and the PCL Picture Frame height is 14 inches, the vertical scaling
factor would be 1:2; the vertical component of the image would be
enlarged to twice its original size to fit into the PCL Picture Frame.
A parameter value of zero or a reset, page length, paper size, or
orientation command defaults the HP-GL/2 plot size to the height
of the currently selected picture frame, resulting in no scaling.
Example:
If the original HP-GL/2 drawing is 7 inches tall, send:
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*c7L