I'm not sure. I was just curious about it.

>>No, I mean xsource. According to Sergei, it is simply the source code for the tools\components.
>
>Yes, I know that, but why do you need to install it? Do you want to change something, say, Code Reference tool (per Tamar Granor suggestion) or RI Builder (as I did in when I was incorporating Doug Hennig ideas and enhancing the builder)?