Perhaps a plain-text or gzipped version of the source, so that it can be more easily downloaded and installed? The output of highlight_file() and highlight_string() isn't directly suitable for pasting into vi in a terminal window.

You might want to explain the purpose of the modifications in NetInfo (rather than simply saying that one needs to be comfortable making changes in NetInfo). In the case of my home network, I plan to make this service available to the other machines (regardless of OS or browser), so the appropriate thing for me to do is add an entry in my local DNS zone. The NetInfo trick is still useful for when I travel with my laptop, though.

I haven't actually installed it yet, but it looks very promising. Very good idea.

Does the output of the help page and special commands validate?