... pen work as many kinds of writing pens and eraser.3.Supplementary presentation tools: eraser, copy and paste, magnifier and local editing function enable ... graphics;offering more than 1200 subject formula; offering many kinds of symbols and the other common graphics. You can also insert ... or network.7. Support the inputs of EDU, DOC, RTF, TXT, PPT and the outputs of AVI, HTML, PDF.8.Sound recording ...
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