in reply to
How does Lingua::tlhInganHol::yIghun work?
See perlfilter for info on source filters, as well as Filter::Simple (as mentioned by bluescreen above) for a simple way to create source filters, and Filter::Util::Call for a not-so-simple way.
Compiling them myself
Merijn's HP-UX software
Whatever is shipped with my OS release
None, i use PerlScript
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