content: I was this the one who always took for advanced study for my Subjects in school and for that i downloaded some pdf. I always took some highlights and underlined texts on pdf and i got frustrated because some apps dont have Features to edit pdf even for just putting highlights and underline on it. But then i found this app so i downloaded it and geez this app is amazing You can put some highlights text signatures and underlines on your pdf JUST FOR FREE. Love this app