Is There a Difference Between Wide and Wide Source Incompatibles?

Dirk perbom is a source incompatibles, because he still thinks we don't have free will. A eleanor stump is a big name that comes to mind,. yet one of the confusing parts. Ca'n tempy's got a really nice book on this, and he makes a distinction between wide and narrow. I i think that the broad source incompatible include alternative possibilities in their requirements. Is that right?