Radial menu control is designed specifically for touch applications and allows quick command selection without moving the finger away from the touch target. Image below shows the radial touch menu in action:
In the example above, the last selected command from radial menu was mail so its placed in the center of the menu so it can be selected without moving the finger from position where radial menu was opened.
Here is an screen-shot of touch radial menu control with more commands and with one command pressed:
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