Let's see, those ones also need one of those mini script macros. This will do it:

[Shortcut Keys]
G=script:moi.drawingAids.gridSnap = !moi.drawingAids.gridSnap;
O=script:moi.drawingAids.objectSnap = !moi.drawingAids.objectSnap;
S=script:moi.drawingAids.straightSnap = !moi.drawingAids.straightSnap;

Thanks for assembling the list!

- Michael