How do I see and configure the key shortcuts?
Use Ctrl+Shift+L to get the list of all shortcuts.
To configure go to menu in the Modify tab. From the Modify tab you can also select the built-in Emacs scheme. Depending on the installed plug-ins, you may use other Emacs / Vi emulations.
Related plug-ins:
ETEE for Eclipse Text Editor Enhancements
Columns 4 Eclipse or Column Mode for Eclipse for rectangular selection
Lunar for editor enhancements