[[...]]










[[Often conflated with [CGI].]]












A delightful aid to work with Web forms is [Don Libes]' echoing
Web page
[http://ats.nist.gov/cgi-bin/cgi.tcl/echo.cgi].  Point a form at
it, and it reports all the data it receives, in a format useful
to developers.  While not deep, it's handy.

The underlying reason is, of course, that Internet protocols are
client-server interactions.  To begin to program usefully, one 
must have '''two''' programs executing predictably--the client and
the server.  For many of us, maintenance of one program at a time
is daunting.  That's why it's such a blessing to have services like
Don's, or the [ftp]-[ftpd], [smtp]-[smtpd], ... pairs in [tcllib],
or ...  We ascend by securing our footing, one step at a time.