Patent US 4,498,150

The specification discloses a method for automatically paginating a data stream in a word processing system. A vertical tracking register is incremented by a value representing the displacement of the vertical print position when a line end code is encountered. The page overflow latch is then interrogated to determine whether a page overflow condition has occurred. If a page overflow condition has occurred, the next character in the data stream following a line end code is interrogated to determine whether the character is a graphic character. If the character is a graphic character, a page end code is copied into the output buffer ahead of the graphic character, the page overflow latch is reset and the tracking register is initialized. The tracking register value is then interrogated to determine whether it exceeds the last typing line. If the last typing line value has been exceeded, the page overflow latch is set. The page overflow latch is subsequently interrogated to determine whether a page overflow condition exists. If not, the input character is copied from the input buffer to the output buffer.