match O:nat with
[ O \Rightarrow O
| (S x) \Rightarrow (S (S x)) ]
+###### INTERPRETATION NUMBER 1 ######
+### (* disambiguation environment *)
+alias id O = cic:/Coq/Init/Datatypes/nat.ind#1/1/1
+alias id S = cic:/Coq/Init/Datatypes/nat.ind#1/1/2
+alias id nat = cic:/Coq/Init/Datatypes/nat.ind#1/1
### (* METASENV after disambiguation *)
### (* TERM after disambiguation *)