cagney, et al...
I'm back after a long passage
with no Wifi
. Trying to catch a few last minute items for the pending Beta, which is sorely needed.
Regarding the CTRL vs ALT modifier key for fine scale panning and zooming:
We switched to ALT, mainly because CTRL was needed with left and right arrow keys for STACK-UP and STACK-DOWN.
So, we can say that the logic now is that ALT is a signal for "fine-scale" screen
Of course, we could reverse the logic. I recall
a vigorous discussion of hotkeys at one time, but do not remember seeing the final committee report.
Is there any reason to change from the behaviour of the current
3.3.1931 Beta, other than the doc change implicit?
I don't know about the Swedish keyboard's codes for "[" and "]".
Have a look at this site, and let me know what codes come up with the  keys.
Keyboard Events and Codes
For US keyboard, I get (for "[") keycode 219 and char code 91.