cdrAbsoluteSegmentOffset

0

Specifies the absolute segment offset, measured in inches (or the current document unit) from the beginning of the segment

cdrRelativeSegmentOffset

1

Specifies the relative segment offset, measured from 0 (beginning) to 1.0 (end). The distribution is uniform along the segment length.

cdrParamSegmentOffset

2

Specifies the param. segment offset, rangings from 0 (beginning) to 1.0 (end). The distribution is not uniform and depends on the position of segment control points.