I am using SpeedGrader and trying to use the Highlight Annotation tool, but for some reason, I am unable to select the desired highlighted portion of the document. I am following the steps; select tool, select annotation color, then select desired section of document, but this action does not work. All the other tools work just fine, just not the Highlight Annotation tool. Also, I have tried the same action on Safari, Google Chrome, and Firefox; still, no result. Any assistance is greatly appreciated.