I don't know what to call it, and Bruces explanation is good enough for me, but RC paper definitely looks different half wet (ie just pulled out of wash to examine) compared to dry. I use Agfa Semi-Matt usually.

Having been following this thread, I printed something last night that initally I thought I'd under printed (but had started packing up so didn't reprint). This morning I had a look and gee.. it's spot on!