... next page, write, erase, zoom, roaming and other functions. 2. Toolbar: Tools menu can be hidden anywhere, Shortcut tool to ... PPT single-player refers to the writing, multi-fingered hand gesture recognition, gestures can be used to achieve next ... , searchlights, cover screen, ruler, protractor and other tools. And can be user-defined external application and direct calls. 9. Pen features:provide ...