I tried Alt+F6 - doesn't seem to do anything.

 

Tried Alt+F7.  It brings up a box containing two lists - "Active Tool Windows" and "Active Files". 

 

"Acitve Tool Windows" is a list including the HTML pane and the Properties Pane.

 

"Active Files" is a list of the tabs in the tabs workspace.

 

You can activate a "tool window" or "active file" by moving the highlight in the Alt+F7 window and then releasing the Alt+F7 keys.

 

But how to move the highlight?  Gets a little strange here.  You can't move the highlight from the "Active Tool Windows" list to the "Active Files" list using the left or right keys.  Only the up and down keys seem to work for this.

 

Holding Alt and repeatedly pressing F7 will cycle through the Active Tool Window list or the Active Files list, but will not move from one list to the other.

 

I'd like to see a keystroke to cycle through the tab workspace and each open "tool window", and select the desired workspace or tool window using by following the orange highlight, and releasing the keys when the orange highlight is in the desired location.