diff --git a/400_xowa/src/gplx/xowa/addons/wikis/ctgs/enums/Xoctg_collation_enum.java b/400_xowa/src/gplx/xowa/addons/wikis/ctgs/enums/Xoctg_collation_enum.java
index 17ce02215..3dc5125b1 100644
--- a/400_xowa/src/gplx/xowa/addons/wikis/ctgs/enums/Xoctg_collation_enum.java
+++ b/400_xowa/src/gplx/xowa/addons/wikis/ctgs/enums/Xoctg_collation_enum.java
@@ -15,15 +15,18 @@ Apache License: https://github.com/gnosygnu/xowa/blob/master/LICENSE-APACHE2.txt
 */
 package gplx.xowa.addons.wikis.ctgs.enums; import gplx.*; import gplx.xowa.*; import gplx.xowa.addons.*; import gplx.xowa.addons.wikis.*; import gplx.xowa.addons.wikis.ctgs.*;
 import gplx.core.btries.*;
-public class Xoctg_collation_enum {
+public class Xoctg_collation_enum { // REF:https://www.mediawiki.org/wiki/Manual:$wgCategoryCollation
 	private final    Btrie_rv trv = new Btrie_rv();
 	private final    Btrie_slim_mgr trie = Btrie_slim_mgr.cs()
-		.Add_str_byte("uppercase"	, Tid__uppercase)
-		.Add_str_byte("uca"			, Tid__uca);
+		.Add_str_byte("uppercase"   , Tid__uppercase)
+		.Add_str_byte("uca"         , Tid__uca)
+		.Add_str_byte("numeric"     , Tid__numeric)  // NOTE: no logic implemented for numeric; DATE:2019-10-15
+		.Add_str_byte("identity"    , Tid__identity) // NOTE: no logic implemented for identity; DATE:2019-10-15
+		;
 	public byte To_tid_or_fail(byte[] raw) {
 		byte tid = trie.Match_byte_or(trv, raw, 0, raw.length, Byte_.Max_value_127);
 		if (tid == Byte_.Max_value_127) throw Err_.new_unhandled_default(raw);
 		return tid;
 	}
-	public static final byte Tid__uppercase = 1, Tid__uca = 3;
+	public static final byte Tid__uppercase = 1, Tid__uca = 3, Tid__numeric = 4, Tid__identity = 5;
 }