8. A method of processing job tickets in a printing system, the method comprising: receiving a printable file from a host system, the printable file comprising a plurality of page-break indicators, each page-break indicator indicating a logical page; receiving a job ticket associated with the printable file, the job ticket comprising layout parameters; re-defining in a reprogrammable page description language (PDL) processor a function of a page-break indicator in accordance with the layout parameters; and printing a plurality of the logical pages of the printable file after the job ticket interpreter re-defines the function of the page-break indicator.
11. The method of claim 8 wherein: receiving the printable file comprises receiving a PostScript printable file containing a PostScript showpage operator; re-defining a function of a page-break indicator comprises re-defining the function of the PostScript showpage operator in a PostScript interpreter.