diff --git a/topics/grammars/wiki/simple/MediaWiki.rsc b/topics/grammars/wiki/simple/MediaWiki.rsc
new file mode 100644
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+++ b/topics/grammars/wiki/simple/MediaWiki.rsc
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+module MediaWiki
+
+syntax WikiText = WikiSymbol*;
+
+syntax WikiSymbol
+	= MWWord w
+	| WikiLink wl;
+
+syntax WikiLink
+	= simple: "[[" PageName destination "]]"
+	| barred: "[[" PageName destination "|" MWWord+ description "]]"
+	;
+	
+lexical MWWord
+	= ![\ \t\n\r\[\]]+ !>> ![\ \t\n\r\[\]]
+	;
+
+// http://en.wikipedia.org/wiki/Wikipedia:Naming_conventions_(technical_restrictions)#Forbidden_characters
+lexical PageName
+	= ![#\<\>\[\]|{}\t\n\r]+ !>> ![#\<\>\[\]|{}\t\n\r] 
+	;
+
+layout MediaWiki = [\ \t\n\r]* !>> [\ \t\n\r];
+
+// needed if you want to run an eclipse editor
+public WikiText parsewikitext(str i, loc s){return parse(#WikiText, i, s);}
+// import util::IDE;
+// import MediaWiki;
+// registerLanguage("MediaWiki","wiki",parsewikitext);
+// registerContributions("MediaWiki",{popup(menu("ANTLR",[edit("transform", ppWT)]))});
+
+
+public str ppWT((WikiText)`<WikiSymbol* wss>`)
+{
+ return "<for(ws <- wss){><ppWS(ws)><}>";
+}
+
+public str ppWS((WikiSymbol)`<MWWord w>`)
+{
+ return "<w>";
+}
+
+public str ppWS((WikiSymbol)`<WikiLink wl>`)
+{
+ if ( wl.prod.def.name == "simple" )
+  return "[[<wl.destination>]]";
+ else
+  return "[[<wl.description>|<wl.destination>]]";
+}
+
+// import MediaWiki;
+// parse(#WikiText,|project://wiki/src/test.wiki|)
+// parse(#WikiText,"some [[Wiki]] text")
+// ppWT(parse(#WikiText,"some [[Wiki]] text"))