CwF: make level of Fams an explicit argument

src/CwF.lagda.md

@@ -50,7 +50,7 @@ This file defines a CwF, without any particular type formers. Here CwFs are thou
 A category $\mathcal C$ is said to be a CwF if there is a contravariant functor $\mathcal F : \mathcal C^{op} \to \mathcal Fam$, and it fufills the laws of the GAT.
 
 ```
-record is-CwF {o h f : Level} (𝓒 : Precategory o h) : Type (lsuc (o ⊔ h ⊔ f)) where
+record is-CwF {o h : _} (f : _) (𝓒 : Precategory o h) : Type (lsuc (o ⊔ h ⊔ f)) where
   field
     𝓕 : Functor (𝓒 ^op) (Fams f)
 ```