When a section designed within Section Maker is added to the sections library extra geometric data is stored in the library along with the section properties.  This data is used to recreate the geometry of the section within both Section Maker and Multiframe.  This data cannot be viewed or edited.  Caution should be exercised when cutting and pasting data within the Sections Table so as to not change the order of the sections in this table.

The Custom Shape Data column in the Sections Table indicates which sections contain this extra geometric data.  For section shapes designed within Section Maker that can be represented as one of the standard section shapes, this data can be removed and the geometry of the section will be recreated from its dimensions.