Index: ddrc/drc_query_tdx.html
===================================================================
--- ddrc/drc_query_tdx.html	(revision 31301)
+++ ddrc/drc_query_tdx.html	(revision 31302)
@@ -46,7 +46,7 @@
 	<tr> <th> command <th> parameter names <th> explanation
 
 	<tr> <td> type <td> typename
-		<td> Constant data type (anything the conf system accepts; typically coord, real or boolean). Only one instance per const allowed.
+		<td> Constant data type (anything the conf system accepts; typically coord, real or boolean). Only one instance per const allowed. Must be the first command.
 
 	<tr> <td> desc <td> str...
 		<td> Human readable description of the constant. Only one instance per const allowed.