Abstract: A method is disclosed for assisting the operator of an interactive text processing system to add a list of numbers that have been entered into the system during the creation of a document. The method involves the operator positioning the cursor adjacent the first number in the sequence by operating the cursor move keys. The next step involves the operator pressing and holding either the "column add" or the "row add" function key while watching the movement of the cursor from the first number in the sequence to succeeding numbers in the sequence until the cursor is positioned adjacent the last number in the sequence, at which time the function key is released. The last step in the process is for the operator to press the Enter key which enters the total into the system for subsequent processing and displays the total in the appropriate location on the display.