DOC "OP" key in token spec

website/docs/usage/rule-based-matching.jade

@@ -59,6 +59,10 @@ p
 
 +h(2, "quantifiers") Using quantifiers
 
+p
+    | Token specifiers may have quantifiers attached to them, by setting the "OP" key
+    | to one of the following values:
+
 +table([ "Name", "Description", "Example"])
     +row
         +cell #[code !]
@@ -80,10 +84,18 @@ p
         +cell match 0 or 1 times
         +cell optional, max one
 
+p
+    | Thus the following matcher will match "Hello, World" or "Hello world" or "Hello - - world":
+    
++code.
+    matcher = Matcher(nlp.vocab)
+    matcher.add_pattern("HelloWorld", [{LOWER: "hello"}, {IS_PUNCT: True, 'OP': '*'}, {LOWER: "world"}])
+
 p
     |  There are no nested or scoped quantifiers. You can build those
     |  behaviours with acceptors and
     |  #[+api("matcher#add_entity") #[code on_match]] callbacks.
+    |  All the operators are greedy: they will match as many tokens as possible.
 
 +h(2, "acceptor-functions") Acceptor functions