21. The computer readable storage medium of claim 18 , including instructions that cause the device to simultaneously move the first endpoint to a third location in the text and the second endpoint to a fourth location in the text.
21. The computer readable storage medium of claim 18 , including instructions that cause the device to simultaneously move the first endpoint to a third location in the text and the second endpoint to a fourth location in the text. 22. The computer readable storage medium of claim 21 , wherein the instructions for simultaneously moving comprise instructions that cause the device to: associate the first endpoint with a first finger detected on the touch-sensitive display; associate the second endpoint with a second finger detected on the touch-sensitive display; and detect the first and second fingers simultaneously slide to the third and the fourth locations, respectively, on the touch-sensitive display.