You can enter the Part module at any time during an ABAQUS/CAE session by clicking Part in the Module list located under the toolbar. The Part, Shape, Feature, and Tools menus appear on the main menu bar, and the title bar of the current viewport displays the name of the current part, if one exists.
To exit the Part module, select any other module from the Module list. You need not take any specific action to save your parts before exiting the module; they are saved automatically when you save the entire model by selecting File
Save or FileSave As from the main menu bar.