| THead: K \to (T \to (T \to T)).
let rec tweight (t: T) on t: nat \def match t with [(TSort _) \Rightarrow (S
-O) | (TLRef _) \Rightarrow (S O) | (THead _ u t0) \Rightarrow (let TMP_1824
-\def (tweight u) in (let TMP_1823 \def (tweight t0) in (let TMP_1825 \def
-(plus TMP_1824 TMP_1823) in (S TMP_1825))))].
+O) | (TLRef _) \Rightarrow (S O) | (THead _ u t0) \Rightarrow (let TMP_1 \def
+(tweight u) in (let TMP_2 \def (tweight t0) in (let TMP_3 \def (plus TMP_1
+TMP_2) in (S TMP_3))))].