Hi Filippo!

Toogle GridSnap:

script:moi.drawingAids.gridSnap = !moi.drawingAids.gridSnap;


and just in case you need the other "Snaps":


Toogle StraightSnap:

script:moi.drawingAids.straightSnap = !moi.drawingAids.straightSnap;


Toogle ObjectSnap:

script:moi.drawingAids.objectSnap = !moi.drawingAids.objectSnap;


I'm using them with F5, F6 and F7.

~ Marco

Thank Marco!
This is what I was looking for.
Thank also for the other scripts... these were the second step

Thank you very much

Filippo