[opencms-dev] Can't find newly created module !?

[pat sad]

I have tried creating a new module after following the documentation
and once I created it, I couldn't find it anywhere in order to develop
it.

I named it com.csssite.www as package name, and I can see it part of
the modules in the administration view.

I checked both in the default/sites/modules and in the root
system/modules/ nothing there.

I tried doing an export, it didn't make any difference.

Could someone point me on its whereabouts ?