It lets you draw using lines, free hand scribbles, text labels, as well as a large choice predetermined shapes, which you can resize, move, rotate and adjust. You can change line width, fill color, font size and other properties. Common features such as group, order, align and distribute also work when you select multiple objects in your drawing. Finally, you can do all that with a friend through the collaboration feature in Google Docs.
As simple as this feature now looks, browsers of old were not able to support it, because there was no support for SVG (Scalable Vector Graphics); currently, all major browsers support it, except Internet Explorer, which will not support it even in version 8. In cases where SVG doesn't work, Google uses VML (Vector Markup Language) for rendering the drawings.
In other news, Google also created a BlackBerry version of its voice search application, previously only available for the iPhone.
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