Add a menu option for changing the Selection Mode

[tstanley]

It would be convienent if there was a menu item for changing the Selection Mode.  Not that I would probably ever use the menu item itself, but if it was in the menu I could bind it to a shortcut key and I would use the shortcut key all the time.  Currently the only way I am aware of to change the selection mode is to use the mouse to click on the icon on the status bar, which is kind of inconvienent when manipulating text with the keyboard.  Thanks.

[nickb]

Hey tstanley -

Actually, the selection mode can be toggled by default with ctrl+insert, and modified through the Change Shortcut Keys dialog:

[tstanley]

Thanks.  I guess I missed that all the way at the bottom.

I hearby retract my idea as it is already implemented.