This is taken from MacUser, Vol. 9 No. 16, August 6, 1993 issue. At that time, MacUser magazine used to keep a Help section titled Hints and Tips, where Peter Jackson compiled readers’ tricks and shortcuts. This tip is from Graham Tyers, of Oakham, and is intended for those who reprint documents regularly.
When you print a document using background printing, make a copy of the spool file that appears in the Print Monitor Documents folder in the System Folder. To print this document again, option-drag it into the Print Monitor Documents folder and it will print instantly, although you may have to click OK in a dialog box, depending on your printer. This method will print documents from hefty applications in a fraction of the time taken to launch the application and then spool the file. The down-side is that the spool files take up a lot of space, especially if pictures or other graphics are included.