Default UI Menu: File/Save
Ribbon UI Menu:
Hotkey: Ctrl+S Saves the current drawing to disk. If the file was not previously saved, the Save As window will appear.
Save as type: By default, you will save the file as a .tcw file. Use this list if you want to save (export) the file to a different format. Setup: Enables you to set parameters for the saved .tcs file . When exporting to another file format, provides access to conversion options.
Drawing: Saves the entire drawing. Selection: Saves the selected objects only. If Prompt for Summary Info is checked in the General page of the Program Setup, the Summary Info window will appear before saving.