It’s a tool to generate ws documentations.
It’s very useful to many things, but in my opinion, the most important is… help developers when they need to consume a webservice.

Using
DLC_installation\bin\bprowsdldoc your_wsdl folder_for_documentation

Sample – MsDOS
cd C:\DLC101B\bin
bprowsdldoc http://myhost:2580/MyService/MyMethod?WSDL c:\myws

Now it’s just open the index page inside the chosen folder.
c:\myws\index.html