Added usage statements for Grammar.pod

Author: dha

lib/Type/Grammar.pod

@@ -27,8 +27,14 @@ More L<documentation on grammars|/language/grammars> is available.
 
 =head2 method parse
 
+Defined as:
+
     method parse($target, :$rule = 'TOP',  Parcel :$args = (), Mu :$actions = Mu, *%opt) {
 
+Usage:
+
+    GRAMMAR.parse(TARGET, RULE?, ARGS?, ACTIONS?, OPTIONS?)
+
 Parses the C<$target> (which will be coerced to L<Str|/type/Str> if it isn't
 one), using C<$rule> as the starting rule. Additional C<$args> will be given
 to the starting rule if provided.
@@ -100,8 +106,14 @@ This outputs:
 
 =head2 method subparse
 
+Defined as:
+
     method subparse($target, :$rule = 'TOP', Parcel :$args = (),  Mu :$actions = Mu, *%opt) {
 
+Usage:
+
+    GRAMMAR.subparse(TARGET, RULE?, ARGS?, ACTIONS?, OPTIONS?)
+
 Does exactly the same as L<method parse|/routine/parse>, except that cursor
 doesn't have to reach the end of the string to succeed. (That is, it doesn't
 have to match the whole string).
@@ -115,8 +127,14 @@ have to match the whole string).
 
 =head2 method parsefile
 
+Defined as:
+
     method parsefile(Str(Cool) $filename, :$enc, *%opts) {
 
+Usage:
+
+    GRAMMAR.parsefile(FILE, OPTIONS?)
+
 Reads file C<$filename>, and parses it. All named arguments are passed on to
 L<method parse|/routine/parse>.