Where is custom_breadcrumbs_views?

The documentation for 6.x-2.x (an I assume the D7 version??) mentions enabling a custom_breadcrumbs_views sub module. Where can this module be found? I installed the Custom Breadcrumbs module and activated. There is only one module there. Then I searched D.org modules for "custom_breadcrumbs_views" and "custom breadcrumbs views". No dice there (at least in the first 50 entries).

So where can I find this module? And doesn't a link to important sub-modules belong on the module's home page? (I'm happy to do this if you can point me to the sub-modules.)