http://www.boosterforum.com/vote-374818-217976.html?adresse=www.myadd.pro/2021/05/29/rwfeds/

This is display.cgi (source). It takes some text you enter into a form, and displays it for you as HTML. This is a great way to see how some HTML code looks in your (or someone else's) browser. So paste 'n go: