When I work with Script Editor on AppleScripts that work with multiple applications, I bristle at having to display multiple dictionaries to have on hand: it takes so long for the Script Editor to load the list of every dictionary on the system. Then I guessed that I could command-click on each of the dictionaries that I needed, and display them all at once without having to load that list every single time ... I tried it, and it worked!
It would be nice if Apple allowed that list to simply perisist as a window and not disappear when you make your selection, but this discovery is handy nonetheless.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20030303174702164