Somewhere around the time apple introduced the desktop printer, it 
also introduced the printer description documents (ppd's). These 
documents contain all information necessary to use laserwriters (the 
appletalk/postscript one's anyway).
The ppd's do have their limitations. Take for instance 
configurations. I have a laserwriter IIg upgraded to 20 mb internal 
memory. Still, when trying to change setup I can only choose between 
'minimum 4 mb', 'upgraded to 5 mb' and 'upgraded to 8 mb'. Now I 
wonder about the pre desktop printing era of laserwriter printing, 
when the extension was called 'laserwriter' instead of 'laserwriter 
8'. There were no ppd's back then. The system would would obtain info 
about the printer from the machine itself and store it somewhere 
(laserwriter prep?). Could it recognize and handle the 20 mb back 
then? I can't figure it out just yet. The odd thing is that there is 
hardly any info about this on the Web. I can't believe I'm the only 
person on this planet that ever upgraded a laserwriter beyond 8 mb.
Sometime ago I tried changing the ppd, but I'm not sure that got me anywhere.

Marten
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