Thank you dunkemhigh!
What is " the sequence of documents that have been made active in the main design window"?
For example:
I made active (i.e. edited or at least opened in the main window to look at, whether I edited it or not) the following documents in the following order:
schematic A
then PCB 1
then schematic B
then schematic C.
So I am now on schematic C...
I then want - with a shortcut - backtrack (i.e. move backward) within that same sequence of documents I made active (edited or at least looked at).
So because I am on schmatic C, by pressing a shortcut Altium should make active Schematic B then if pressed again go to PCB 1 and then schematic A.
And another shortcut pressed at any point then would do the same in the forward direction.
There used to be a green arrow on the top left of Altium that would do that. If I remember well the pop-up tip of that icon was just saying "Back".
But it is not there anymore...
Thank you