upd

Author: mattqual

src/lang-patterns/identifier-pattern.md

@@ -1,10 +1,10 @@
 # Identifier pattern
 
-An identifier pattern is most commonly used for variable bindings; however it can also be used for pattern matching within algebraic data types, where it can also match parameters or fields using compile-time constants.
+An identifier pattern is most commonly used for variable bindings; however it can also be used for pattern matching within algebraic data types by using call-like parentheses, where it can also match parameters or fields using compile-time constants.
 
 ```sx
 x
-Nothing
+Nothing()
 Vector(x, y)
 Vector(*, y)      // skips "x"
 Vector({ x, y })