# The Navigation Window

The Navigation Window is the frame to the left of the program window. It allows you to interact with the project. This is where you define the project units of measure, variables, frequecies, outputs, substrates and 2-port data files used by the project. It also shows a list of the project schematics and allows you to select the schematic to be displayed in the right hand frame of the program window.

Clicking on the arrow icons at the nodes of the tree allows you to expand or collapse items. Right clicking on items will allow you to add, rename, modify or delete items.

ViPEC Development team (vipec-developers@lists.sourceforge.net)