honorUserUnit

Control use of the UserUnit setting.
[read/write property] honorUserUnit([out, retval] VARIANT_BOOL *userUnit) honorUserUnit([in] VARIANT_BOOL userUnit)
If this property is true, tells XpdfPS to honor the UserUnit setting on PDF pages when computing page/paper size.

If this property is false (the default), the UserUnit settings are ignored.

VB6:
pdf.honorUserUnit = True