Each new Eclipse workspace has the default settings, arg! I'm going to collect my customisations here.
Window > Preferences...
General > Editors > Text Editors > Spelling | Turn off
General > Editors > Text Editors | Show line numbers
General > Keys | Next Editor bound to Ctrl-Tab; Prev Editor bound to Ctrl-Shift-Tab
Need to check out:
https://code.google.com/a/eclipselabs.org/p/workspacemechanic/
http://mcuoneclipse.com/2012/04/04/copy-my-workspace-settings/