Symmetric Sections about Y Axis

For symmetrical profiles in the new catalogue, which are symmetrical about the Y axis, the Plines below are mapped to Cardinal Points. It might appear confusing, but the left/right relationship depends on how you look at the profile - in the same direction as the profile vector, or against it.

For angle and channel profiles in the new catalogue the Pline mapping is as follows. This difference is principally because of the SDNF definition of the default profile orientation.

For the old (E3D1.1) catalogue the Plines are mapped as follows. For symmetric sections that are symmetrical about the Y axis. Symmetric Sections about Y Axis