Due to some people asking about pdf apps." o9 R# W( e. C+ a
I use android apps " repligo reader "which has the highlight feature on playbook,but playbook has bugs 3 x) v. ~. b M, v* a. t9 u...8 Q* n7 F" u: R2 C! `: \5 Y& m
also I use goodreader for ipad...