Modifying an Out-of-the-box Wall Style and Endcap

In response to a thread in the Autodesk Architectural Desktop 2006 Discussion Group, I posted a sample file and explanation of one way to take one of the out-of-the-box wall styles that has an endcap, and modify both the wall style and create a new endcap for the modified style. The example shows converting a wall style with 5/8" GWB on a metal stud to 1/2" GWB on the same metal stud.

The original poster managed to resolve his problem using in-place editing; my post explains how to use the WallEndcap command to generate the defining polylines of an existing Wall Endcap Style, then use those to create a new Wall Endcap Style for the modified wall style.