In short, the functionality is built in 3 different parts.
Next to this there is a nice "trick" to overcome problems with modules that use the $_SERVER['PHP_SELF'] value.
The functionality is tested succesfully on my production webserver as well as on a WAMP testserver.
On the rest of this website I will explain what it is what the three parts do.
First I want to explain a bit about the mod_rewrite rule. Next the PHP Script is explained, and finally the Droplet code is described.