=== Changing Project Settings ===
You can change the project length units and frequency settings at any time after you create a new project. This can be done from the Units and Frequency dialogs.The Units dialog can be accessed from '''Menu > → Simulate > → Project Units''' or by clicking the '''Units''' [[File:Ruler-tool.png]] button of the Simulate Toolbar. Other alternatives include the keyboard shortcut "Ctrl+U" or double-clicking the "Units" section of Status Bar, which by default displays "mm".
You can access the Frequency dialog from '''Menu > → Simulate > → Frequency Settings...''', or by clicking the '''Frequency''' [[File:Frequency-tool.png]] button of the Simulate Toolbar or using the keyboard shortcut "Ctrl+F". The current Center Frequency is displayed on the Status Bar with the current frequency units. Double-clicking on this value is another way to open up the Frequency Dialog. From this dialog you can change the values of Center Frequency and Bandwidth as well as the Frequency Unit.
=== Handling Project and Data Files ===