You needn't install this plugin if you use armeabi-v7a CPU devices (include most of Samsung Galaxy and HTC/Moto/Sony Android phones/tablets), this is for armeabi, mpis and x86 CPUs devices only. Backup PDF plugin for Moon+ Reader Pro v2. 6. 0+, Features: Fill out PDF Form. Highlight, annotation, handwriting. Smart scroll lock, smooth reading experience. Night mode support, 6 additional pdf themes available. Dual-page mode for landscape screen. Speech, auto-scroll compatible. Read statistics, sync, flip animation available.