To annotate a text is to write notes, comments or questions in the margins. When reading literature,we usually mark important passages, potential symbols or metaphors, recurring motifs or themes, and allusions. Sometimes people will write definitions of words they don't know or questions they have in the margins. The key to a well annotated text is to put the notes nearby the important passage so that you can find it again. Your teacher should give you some clear direction to help you focus your comments. Use that as your guide. Also, some teachers want you to annotate (or gloss) your text but won't let you write in the book. If that's the case, use sticky notes!