Whyteboard allows you to comment PDF and PostScript files and a variety of image formats. You can use common tools, such as pens, rectangle, ellipse, text tools, you can draw shapes, it can move, resize, recoloured history such as graphics memory, so you can replay it. Tabbed paintings, each with its own unlimited undo and redo operation of the table. Real-time updates of each thumbnail. By shutting down the table can also be withdrawn to restore their data. Note that control, similar to virtual, can edit a note affixed. A drag, real-time updates resizable canvas extends to whatever size you want.
Related knowledge of photo editing software: