YAPS

Yet Another Printer Spooler (YAPS for short) is a little program that patches itself into the operating system (low level BIOS calls) and waits for someone to send a character to the printer. When that happens, it checks to see if your printer is busy printing a character. If the printer is not YAPS sends it a character to print. However, if it is busy, YAPS will store that character in a buffer and return control of the computer to your program. No printing long documents will not tie up your computer.