The template is in the template.html file. Note that comment markers are
used to control how the template.awk Awk script generates the C header
which gets ultimately included in the compiled object code. Comment markers
have the <!-- var identifier --> format. Here identifier must be
a valid C identifier. All the text following the marker until the next
marker will be flattened into a C string.
If the identifier is NONE (capitalized) the text from that marker up to
the next marker will be discarded.
You will need Awk. I hope any decent implementation will do, but the GNU one is known to work flawlessly. Just do:
$ awk -f template.awk template.html > template.h
If your copy of awk is not the GNU implementation, you will need to
install it and use gawk instead in the command line above.