Found these in the Tips and Tricks section of the Workbench User Guide in the help:

Finding a string incrementally
Use Edit > Incremental Find Next (Ctrl+J) or Edit > Incremental Find Previous (Ctrl+Shift+J) to enter the incremental find mode, and start typing the string to match. Matches are found incrementally as you type. The search string is shown in the status line. Press Ctrl+J or Ctrl+Shift+J to go to the next or previous match. Press Enter or Esc to exit incremental find mode.

Go to last edit location
Navigate > Go to Last Edit Location (Ctrl+Q) takes you back to the place where you last made a change. A corresponding button marked  is shown in the toolbar. If this toolbar button does not appear in your perspective, you can add it by selecting Window > Customize Perspective > Other > Editor Navigation.

Shortcuts for manipulating lines
All text editors based on the Eclipse editor framework support editing functions, including moving lines up or down (Alt+Arrow Up and Alt+Arrow Down), copying lines (Ctrl+Alt+Arrow Up and Ctrl+Alt+Arrow Down), inserting a new line above or below the current line (Ctrl+Shift+Enter and Shift+Enter), and converting to lowercase or uppercase (Ctrl+Shift+Y and Ctrl+Shift+X).

http://help.eclipse.org/help31/topic/org.eclipse.platform.doc.user/tips/platform_tips.html

The material is Copyright (c) IBM Corporation and others 2000, 2005 and is licensed under the Eclipse Public License (EPL)
http://help.eclipse.org/help31/topic/org.eclipse.platform.doc.user/about.html

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