This probably belongs on Alan Lepofsky's site - and maybe it's already there - but I thought it was pretty handy when I figured it out.
I've had lots of occasions where I get a doc link, open the linked document and then want to open the database to see other related documents. I had always gone to my workspace, located the icon for the database I just opened and clicked it to open the database. I figured there had to be an easier way and I finally found it:
Click View | Go up to Parent View.
This opens the view that contains the linked document. Action buttons can execute @Command([GoUpLevel]) to achieve the same effect.
This is probably not news to a lot of people but I just learned about it. Now, if only you could right click on the open document and see the option there...
Technorati: Show-n-Tell Thursday