Just like other types of feedback, text comments can be added to a conversation, a file, or a highlight on a file.

To add a text comment, just start typing in the comment box (or click the "A" icon to switch from a different comment type):

When you've typed your message, click "Post Comment":

Your comment will be added to the conversation.

If you've made a mistake with your text comment, you can edit or delete it. Click the gear icon next to the comment, then click "Edit" or "Delete":

Teachers can delete student's comments, and students can delete their own comments.