

It is just written on the disk and work continues in the current document. Save a copy as above but the new document is not used inside Inkscape.

Save as as above but also saves with a new name and this new document is used inside Inkscape. If a format other than Inkscape SVG (or SVGZ) is used, a nag screen is displayed at close time, to warn the user about possible data loss. Save contains all possible file formats (except PNG) and saves with the same name. There are different opinions on the current status of this functionality in Inkscape which is: This blueprint stems from several discussions on the mailing list about which format should be available in Save as or in Export and whether some should be exclusively available in only one of those. 1.2.4 Correspondance between bitmap and vector functionality.1.2.3 Alternative proposal for the export dialog.
