Abstract: A word processing apparatus is capable of detecting the entry of a function or operation during keying of the text into memory, which requires an operator intervention such as the changing of the print element or the changing of the format parameters. Upon the detection of that condition, an automatic operation is invoked by the software process to insert into the text string and memory a stop code. This insures that the playout of the stored text will be interrupted to permit the operator to perform the same or related operation at the same relative position in the text.