56. A mobile telephone having a touch interface and a graphical user interface, wherein the mobile telephone includes the computer system of claim 41 .
56. A mobile telephone having a touch interface and a graphical user interface, wherein the mobile telephone includes the computer system of claim 41 . 58. The mobile telephone of claim 56 wherein the indication of the accuracy of the practice gesture currently being performed includes one or more items selected from the group consisting of: an animated hand, one or more motion trails, an iconographic representation, a textual description of the gesture currently being performed, a textual description of a command corresponding to the gesture currently being performed, a positive feedback indicator, and a negative feedback indicator.