1. A raised-letter information processing apparatus comprising: embossing means for embossing raised letters on a processing sheet, wherein a maximum continuous embossing amount that can be embossed on a single piece of the processing sheet has been predetermined; determination means for determining a continuous embossing amount of raised letters under editing, and determining whether the continuous embossing amount is in excess of the maximum continuous embossing amount; display means for displaying, on a display screen, cell images of the raised letters together with a notation character string corresponding to the cell images; and display control means that, when the continuous embossing amount is in excess of the maximum continuous embossing amount, causes the display means to display at least one of the excess cell images corresponding to the portion exceeding the maximum continuous embossing amount out of the cell images and the notation character string, and excess notation characters corresponding to the excess cell images so as to be distinguishable from a remaining portion.