Due to some people asking about pdf apps. 3 N% ~1 l! O. k4 R! Z9 P" k/ W. B& G u I use android apps " repligo reader "which has the highlight feature on playbook,but playbook has bugs % ~* R3 a! q& P: L..., D6 `& g2 G7 J
also I use goodreader for ipad...