... is capable to recognize different touch command of finger of pen, for example, use can zoom ... roaming. All these functions have relevant certificate of patent6,magic eraserStandard geometric graphics1.support to draw ... document. Insert functionInsert picturesCould insert the pictures of jpg,png,bmp,PDF, TIFF,PPT,HTMLInsert ... insert common video in the format of AVI, MOV,MPEG, WMV, etc; audio in ...