httcld provides a very small HTTP server with an
embedded Tcl interpreter. In addition to static
HTML and image files, it serves .htcl files, which
are HTML with embedded tcl code. The Tcl is
executed on the server, and the resulting output
is embedded in the stream sent back to the client.
In addition, variables in the Tcl namespace may be
set and retrieved directly, say by an AJAX script.
