doc FALLBACK

doc/Language/typesystem.pod6

@@ -26,6 +26,22 @@ TODO
 
 =head3 Methods
 
+=head4 Fallback method
+X<|FALLBACK (method)>
+
+A method with the special name C<FALLBACK> will be called when other means to
+resolve the name produce no result. The first agument holds the name and all
+following arguments are forwarded from the original call. Multi methods and
+subsignatures are supported.
+
+    class Magic {
+        method FALLBACK ($name, |c(Int, Str)) {
+        put "$name called with parameters {c.perl}"  }
+    };
+    Magic.new.simsalabim(42, "answer");
+    
+    # OUTPUT: «simsalabim called with parameters ⌈\(42, "answer")⌋␤»
+
 =head4 Reserved Method Names
 
 X<|WHAT (reserved method)>X<|WHO (reserved method)>X<|HOW (reserved method)>X<|VAR (reserved method)>