Whether you are an Eclipse veteran or beginner, there will be times when you want to access a certain functionality but you can’t remember exactly where to find it.

This is where Control-3 (or ⌘-3 on Mac) comes in handy.

For example, if I want to modify the Java formatting options, I press this combination and then the first letters of “formatter:”

As you can see, every single functionality in Eclipse that contains the letters “formatt” is displayed, and the one I’m looking for is displayed at the bottom. I select it, and:

Remember this shortcut next time you get lost in Eclipse!

From http://beust.com/weblog/2011/03/24/never-get-lost-in-eclipse-again/