主要功能是图片展示，特点可以超出屏幕预览，鼠标跟随移动。-It s show images for HTML+ JS.Image can show full screen.

Reusing Browser Technology - Editing Glyphs！重用浏览器技术！ Editing glyphs are images that represent the tags formatting a Web page. Editing glyphs give users visual clues about the structure of a page, and enable users to do more precise editing