Specify the distance (mm) from the left edge of the printable area to the area where the printing starts on paper, within the range 0-100 mm in increments of 1 mm.
Note that there may be some discrepancy in the actual printing.

Printable area
Left Margin (leftspace)
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When the "leftspace" printing option is specified, the actual margin is calculated by adding this value and the value specified for "leftspace".