Due to some people asking about pdf apps. 6 T6 R2 [- Z: K# G F3 q0 O' l I use android apps " repligo reader "which has the highlight feature on playbook,but playbook has bugs 1 I' |0 K; S7 ]9 L...* B) z+ C7 R6 x- K5 h
also I use goodreader for ipad...