In a network wherein a plurality of independent computers having various page description languages (PDL's) interface with a central printer through a plurality of lines, a system allows the user or administrator of a computer on each line to elect whether the line shall have the property of persistence...http://www.google.ca/patents/US5475801?utm_source=gb-gplus-sharePatent US5475801 - System for controlling the printing of electronic documents with various page description languages and other parameters
