PLeading(short dPoints);
Point size, from 0 to 1300 points, in tenths of a point (250.0 = 2500)Automatic leading specifications. If you specify automatic leading, PageMaker creates leading 20% larger than the type size. For example, 10-point type is automatically assigned 12 points of leading. To change this percentage, choose the Paragraph command from the Type menu, click the Spacing button, and then type a new value in the Autoleading edit box. You can also use the PSpaceOptions command.
kParmDefault for automatic leading
PLeading measurements. The way leading is measured depends on the type of leading that is currently specified (e.g., Proportional, Top of caps, or Baseline). To set the leading type, use the PSpaceOptions command.
Example. The following example specifies 16.5 points of leading.
PLeading(165);
Adobe PageMaker 6.5 Help > Commands > Type > Type Specs
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