Used to windows xp, the authors find it difficult to adjust to windows 7.-2. the authors who are used to windows xp find it difficult to adjust to windows 7.-rule: name the doer of the action in the phrase that dangles.
in the question, the introductory phrase looks as if it is meant to modify a person or persons, but no one is mentioned in the sentence. such introductory adjective phrases, because of their position, automatically modify the first noun or pronoun that follows the phrasein this case, it. the connection in this case is illogical because it was not used to windows xp. to debug, name the doer of the action in the phrase that dangles.