Hi,
First off, many thanks for you great Lisp softwares. They are useful for both using and reading. :-)
After seeing the *template-(start|end)-marker* special variables I wondered why not do that same for the TMPL_* tokens. I'm not sure if it's a good idea or not but since it was so trivial to implement I'm sending you a patch in attach.
The documention might need further editing.
Thanks,