Hi John,
it's various windows... For example in the elements/cations, when I edit an element, or when I use the "edit mac table".
I can see that it is not a priority... There is more important stuff to do. But maybe, when changing some window, the tab order could be checked.
I use TAB and ENTER quite a lot... I am not a big fan of clicking around with the mouse. So I use TAB also to move from "cancel" to "ok" and hit enter.
Nice would be also some keyboard shortcuts... In calczaf you can open the X-ray menu using alt-x, but then there are no furhter keys defined for the submenu.
Cheers
Philipp