Insert a comment
1. On the Review tab,
2. Tap Note.
3. Tap where you want to add a note.
Edit a comment
1. Select the note,
or in View mode tap the menu in the top right, select Annotations.
2. Tap on the comment you want to edit.
3. Edit the comment.
Change the Comment mark color
1. Tap on the note.
2. Select Properties on the floating toolbar.
3. Select your color or tap on More colors for a larger spectrum.
Delete a comment
1. Select the note.
2. Select Delete on the floating toolbar.