Is there any feature in the Speed Grader to add check marks with different colors (other than the freehand drawing)? This would be a nice feature to have: to be able to insert check marks or other useful shapes like this of different colors.
Are you talking about when you mark up a document using the document viewer and the markup tools? If so, then no. What you have found, the freehand drawing tool is the best tool available in the speed grader at the moment. The other option would be to download the document and use insert options to add checkmarks or other shapes to it.
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