expoweb/1623

Programmers beware.

Troggle generates files in response to URL requests of the form
/1623/238/283.html
but there is also this real folder /1623/ in the expoweb root
which contains HTML files and fragments which are served as-is
as plain HTML.

This is very bad design of course, and a relic, but an awful lot of 
files will need fixing to repair this peculiarity.
Philip Sargent 26/2/2022