I've just acquired a Bamboo graphics tablet and have been using it in the excellent Inkscape. All going very nicely, and it's a huge productivity aid, except for one very annoying little problem. I use either the pen tool or the calligraphy tool for freehand writing/drawing. I can't find how to draw a single dot with either of these tools! So I can't dot my i's, I have to cross them

Is there anyway to override either of these behaviours?
Thanks for your help.