The Save option in the File menu is used to preserve changes made to a PDF file.

 
Save As: Enables you to save a copy of the PDF file to your local computer.

Docsvault Options:
Save As enable you to save a copy of the file under a new name and location in Docsvault
Convert to Word allows you to convert PDF file to Word file
Convert to Excel allows you to convert PDF file to Excel file

Convert to PowerPoint allows you to convert PDF file to PowerPoint file
Undo checkout discards the changes made in the checked out file
CheckIn option allows you to save the changes made in PDF document to Docsvault

Save Copy As... allows you to create a duplicate file under a new name on your local machine

Send by E-mail  allows you to send a copy of the currently displayed PDF file to another user by e-mail

Revert option will undo any unsaved changes and revert to the "original" state of the document. 

Save as Optimized...allows you to optimize pdf and adjust your settings.

Email Documents allows you to document export documents as email attachment

Export allows you to export a selected page(s) or selected area of a page as an image file.

Print can print the currently file

Document Properties enable you to read and create an information about your PDF file (info, security method, appearance, actions when a document is viewed and more in a window Document Properties.