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.
-- 
"The wise are known for their understanding, and pleasant
words are persuasive." Proverbs 16:21 (New Living Translation)

  Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata  ***  http://fm.no-ip.com/