Web: How to specify the URL the website opens with

I am trying out the Web target for the first time, for writing a CGI handler

I want to test query strings, so I need to open the webpage at each run not at “/” but e.g. at “http://localhost:8080/index.html?arg=1

How do I do that?

you may set showUrl( “theurl” ) on session.open with #if debugbuild