29. The pen based computer system of claim 23 wherein said pre-printed material comprises a first children's book including printed words.
29. The pen based computer system of claim 23 wherein said pre-printed material comprises a first children's book including printed words. 30. The pen based computer system of claim 29 wherein: said audio content comprises audio corresponding to said printed words of said first children's book; wherein said pen based computer system is further capable of continuously producing audio output corresponding to a reading of substantially all of the printed words of said first children's book by selection of a symbol printed on said first children's book.