... protractor, set square, searchlight and other tools, and to page up/down, drag object, clone object, etc. Also, ... needed. Software Features:Double OS are supported: windows XP and Windows7;The touch LCD/LED TV is ... move, rotate, zoom in/out object and shift page, etc. with your finger instead of e-pen ... and earphone can be built in;The operating page can be stretched;Abundant teaching resources -- the ...