I have improved the GRASS digit tool in QGIS. Three buttons are now
supported with usual meaning known from v.digit, i.e
new line - left: new
middle: undo
right: close
edit - left: select/confirm
rigth: release
See the prompt in status bar.
Also region and region edit was improved (status stored in setting,
displayed/hidden if switched, EmitPoint used insteaad of CapturePoint).
Radim