SC - Re: couscous?

[Jane Williams]

More clarification for a beguinner, please? 

> Yes, much of the couscous you find now is that evil non-period semolina
> stuff, but you can also find whole-wheat, and even flavored whole-wheat
> stuff.

It hadn't occured to me that there was any other sort of couscous. 
Semolina is made from wheat, isn't it? (I seem to remember avoiding 
couscous when cooking for a wheat-allergic before). What am I 
missing this time?