The location of a secondary catalogue database (optional).The locations of the electrical symbols/panel footprint libraries with the defined icon menu standard for the libraries.WDP extension, which is essentially a text file (can be edited with notepad) that contains all settings around your project setup. You can create multiple projects, but only one project can be active at one time.

An AutoCAD Electrical Project is a set of interrelated electrical drawings that lists the AutoCAD drawing file names that make up the drawing set.