You can close a project at any time using the menu item '''File → Close Project'''. A message pops up that prompts if you wish to save the existing project. You can quit the [[EM.Cube]] application using the menu item '''File → Quit''' or using the keyboard shortcut {{key|Ctrl+Q}}. Note that when you close a project, you are still in the [[EM.Cube]] application. If you start a new project, you may still carry some of the program settings from the previous project. Quitting and exiting the application ensures that all the default settings would take effect the next time when you start a new project.
[[Image:Info_icon.png|40px30px]] To find additional details about [[EM.Cube]]'s file operations, see the '''[[Glossary of EM.Cube's Basic File, Edit & View Operations]]'''.
=== Changing Project Settings ===
The frequency dialog can be accessed from '''Menu → Simulate → Frequency Settings...''', or by clicking the '''Frequency''' [[File:Frequency-tool.png]] button of the simulate toolbar. The project's 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 units.
[[Image:Info_icon.png|40px30px]] To find additional details about these dialogs, see the '''[[Glossary_of_EM.Cube's_Simulation-Related_Functions_&_Operations | Glossary of EM.Cube's Simulation-Related Functions]]'''.
=== Handling Project and Data Files ===