On Wed, 2008-06-11 at 10:01 -0500, stuart wrote:
Beyond that, are there any provisions for "plugin" software printer drivers? For instance, what happens when you want to print to an HP plotter that understands HPGL?
Yes, there is an extension interface for printers, it is documented here:
http://inkscape.modevia.com/doxygen/html/classInkscape_1_1Extension_1_1Print...
Not really a HOWTO at all, but that's how it works. This is currently how things like the Cairo PDF output works. You can so use the exention output interface if you want to implement saving as a particular format. This is more typically used by format conversion utilities, but could be used for something like this.
I believe that Aaron has recently committed an output extension to implement HPGL for instance.
--Ted