How does "set(control, mouse=drag, touch=drag);" work? (from krpano example)

you are right, the documentation is confusing here...
control.mouse and control.touch are both not mentioned in the attributes

but in the examples they are
<control mouse="drag" touch="drag" />

maybe thats an error in the docs...

as the example still works it seems that mouse / touch are working attributes
i'd guess they were replaced by control.mode and are deprecated but kept for compatibilty reasons

Found some more undocumented functions/variables in the code examples:

view.ox_rotated
view.oz_rotated
view.oy_rotated

and

lookto(0,0,90,default,true,true); (this is documented in https://krpano.com/docu/actions/#lookto)

But I read that klaus is working on the release of the .21 and is also updating documentation that comes along with it, so fingers crossed

Quote from kme

view.ox_rotated
view.oz_rotated
view.oy_rotated

i think this is the view / camera position after view rotation

Quote from indexofrefraction

i think this is the view / camera position after view rotation

I found it back in: https://krpano.com/docu/xml/#view.ox_rotated

Kind of weird that I did not find them before: when I go directly to https://krpano.com/docu/xml/ these values are not there, but using the previous link, they are
Ah, nevermind, it's only visible when you use "advanced" on the "view" tag... so much for using "find" in the page