There are several ways to save a file that is currently open. If the file has been named and already exists (i.e., it is not a new worksheet) the Save function will save the file to the existing name.
The Save procedure can be invoked several ways. It is available in the Menubar from the File/ Save menuitem (see Section 3.2). There is also a toolbar Save (see Section 4.2). All these methods are equivalent.
Saving a file
File/ Save
Save
Alt+f s
To save new files, or to rename a file, the Save As... is used. This will prompt the user for a new filename and path for the file to be saved as.
Saving a file as..
File/ Save as...
Save This calls Save as... for new unnamed files. To rename a file, the menu or keyboard shortcut needs to be used.
Alt+f a