Opens the ME'scope Substructure, Library.
The Substructure, Library is a Project named (ME'scope Library.VTprj), and it is located in the ME'scope/Application Data folder on disk
The ME'scope Library.VTprj file contains a number of Structure (STR) files.
Each STR file defines a Substructure.
Any structure model can be added to the Substructure, Library by executing the File | Save in Substructure Library in a Structure window
The contents of the Substructure, Library are displayed on the Substructure, tab when the Drawing Assistant tabs are displayed in a Structure window.
On the Substructure, tab, double click on a Substructure, in the Substructure, browser to add it to the drawing in the structure window.
(See Draw | Drawing Assistant for details.)