The operations under "File" deal with managing your Ez3d project and
export/import of files.
New Ctrl+N
Open Ctrl+O
Save Ctrl+S
Save as...
Revert to Saved
Import Ctrl+I
Export Ctrl+E
Publish Ctrl+Alt+P
Notes
Print... Ctrl+P
Print Preview
Print Setup...
Exit Ctrl+Q
By being both restrictive and flexible at the same time, Ez3d tries to make the task of managing complex projects as easy as possible. Some of the operations can be accessed through their icon in the tool bar, or by using the "hot key" while the cursor is in the main window (for example, using <Ctrl-N> for "File - New").