Lisi Reisz composed on 2016-05-18 16:40 (UTC+0100):
Jan Stolarek composed on 2016-05-18 17:33 (UTC+0200):
As for Ctrl+Up/Down for tab switching to me this is counter-intuitive. Tabs are displayed horizontally. Using keys for vertical movement to switch between them does not make much sense to me.
This is why an alternate tab switching option employed in other apps includes the tab key.
Did you ever use a real tab, such as sheets in a ring binder or pages in a printed manual? Those tabs are each an extension of a layer constituted of one or more pages. Even today, paper manuals often use pseudo-tabs, pages with contrasting colors at different positions on pages' ends to correspond to different chapters, e.g. my Magnavox DVR and Brother printer.
They are numbered 1,2,3,4 etc. One usually regards numbers as going up and down.
Not so much that as the physics of real rather than virtual tabs. Yes, they look like they are horizontal, but each real tab is attached to a layer. Each can overlap one or more others, completely hiding them. One goes up and down through anything that is layered, unless the whole layered stack is stood on end, in which case movement within layers in the stack becomes fore and aft, not side to side.