I know that a lot of programs are switching towards a tab-based structure when opening several files at a time. But it sometimes is very handy to be able to open several PDFs in several windows. I know that this is possible by rightclicking the file etc., but I miss a setting that opens PDFs be default in a new window - and not in a new tab.

Can there be some kind of "setting" that says:
O - open PDFs in new tabs
X - open PDFs in new windows