Due to some people asking about pdf apps. 0 D5 E1 s+ R9 d- y% P1 i I use android apps " repligo reader "which has the highlight feature on playbook,but playbook has bugs & R6 {7 L1 W4 s... * m0 s3 h& a* _# q& A! ~: m" b4 Ralso I use goodreader for ipad...