Currently the Free Draw Module is only possible on the ipad version. It would be nice to:
  1. Allow access to this on a computer as well
  2. Allow editing and erasing of previous drawings once it is pulled forward from the previous notes. For example you may have a drawn macular edema on the retina diagram on the "free draw" module. The following month the macular edema has subsided, you should be able to erase that after having imported the previous note. Currently there is only an option of either completely removing the drawing or starting from a blank canvas again. It does not allow you to edit a previous canvas