use docComment for statement description

server/test/test_statement.lean

@@ -7,10 +7,18 @@ Level 1
 
 /- Missing doc -/
 
--- Shows warning on `foo.bar`:
-Statement foo.bar "some text" : 5 ≤ 7 := by
+-- Shows info on `foo.bar`:
+
+/-- some text -/
+Statement foo.bar : 5 ≤ 7 := by
   simp
 
+-- Shows warning on `foo.bar₂`:
+
+Statement foo.bar2 : 3 ≤ 7 := by
+  simp
+
+
 NewLemma foo.baz
 DisabledTactic tauto
 
@@ -20,7 +28,8 @@ DisabledTactic tauto
 -- test that the command also works inside a namespace
 namespace myNamespace
 
-Statement anotherStatement "test" (n : Nat) : n + 0 = n := by
+/-- test -/
+Statement anotherStatement (n : Nat) : n + 0 = n := by
   rfl
 
 end myNamespace
@@ -29,7 +38,8 @@ end myNamespace
 
 LemmaDoc add_zero as "add_zero" in "Nat" "(nothing)"
 
-Statement add_zero "test" (n : Nat) : n + 0 = n := by
+/-- test -/
+Statement add_zero (n : Nat) : n + 0 = n := by
   rfl
 
 Statement (n : Nat) : 0 + n = n := by
@@ -47,3 +57,17 @@ NewLemma add_zero
 
 theorem xy (n : Nat) : n + 0 = n := by
   simp
+
+
+
+/-! Test that it is possible to add `simp` attribute. -/
+
+/-- Doc comment -/
+@[simp]
+Statement My.add_comm (n m : Nat) : n + m = m + n := by
+  rw [Nat.add_comm]
+
+example (n m : Nat) : n + m = m + n := by
+  simp
+
+#check My.add_comm