function as follows:
1.Set pure color,preload picture and photo in the sd card as your canvas background(eraser can't erase the background), It is allowed for backgroud to larger than your phone's size, and background can be moved and scaled.
2.Set paint color with palette and color picker
3.Paint is able to raw point,line,staight line and rectangle etc.
4.paint's attribute(thickness,transparency),effect(blur,emboss) and xfermodes can be composed, than there are many paints.
5.eraser can erase anything you don't want. undo can cancel the last draw(include erase content), redo will restore.
6.The opus can be shared by message,bluetooth,and sns(Social Networking Services)
finally,any comments and suggestions are welcome, we believe every word you write will benefit us. you can write to firstname.lastname@example.org