Export saves to all vector and bitmap (and other e.g. The increment expression would be on a panel of the Document Preferences dialog, but should default to just a simple incremental number based on the existence of other files with the same name and an appended number. Plain SVG is lossy from the editing point of view but maybe that is a major pain to have two copies of the same document when working with what is supposed to be Inkscape's native format) Save as idem, with a new name and setting the working document to be the new file Save a copy (incremental) saves current file in its current working format (Inkscape SVG(Z) (Plain SVG(Z)) with the specified increment appended. I don't personally work with SVG as the end format so can't tell what the workflow is in this case. Save saves only as Inkscape SVG(Z) (Plain SVG(Z)? People, please give opinions on this. Furthermore, the UI should be consistent for this functionality. Principle 3 means that, when it is possible, saving in vector formats should offer the option to save only one object or a specific part of the canvas to the saved image, as export to PNG does. Principle 2 means that one of Save a copy and Export has to go since they are kind of redundant.
Principle 1 means that Save and Save as should only save as Inkscape SVG(Z) (and possibly plain SVG for people that only work in plain SVG?).
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.