Method One: Save it directly using Ctrl+s and save it in the specified folder. When the star Mark "*" in the top right of the document disappears, it means that your document has been saved. The following instructions have been saved.
Method Two: Click on the Save key on the menu bar.
Method Three: Click on the Window control icon, click to save.
Automatic Save method
Click on the small triangle, then appear the interface to click on the tool, and then click Options.
Under the interface of the options, select General and save, and then set the time to save.