diff --git a/DMR2YSF/README.md b/DMR2YSF/README.md
index b401cb9..e7205eb 100644
--- a/DMR2YSF/README.md
+++ b/DMR2YSF/README.md
@@ -6,6 +6,6 @@ You can use this software with MMDVMHost and YSFGateway, with the default UDP po
 
 MMDVMHost <-> DMR2YSF <-> YSFGateway
 
-You can select a YSF reflector from your DMR radio, associating each radio TG with a specific YSF reflector. Please edit the file TG-YSFList.txt and enter only your preferred DMR ID - YSF reflector mapping list. 
+You can select a YSF reflector from your DMR radio, associating each radio TG with a specific YSF reflector. Please edit the file TG-YSFList.txt and enter only your preferred DMR ID - YSF reflector mapping list. YSF reflectors are identified by ID numbers, and FCS rooms by names.
 
 This software is licenced under the GPL v2 and is intended for amateur and educational use only. Use of this software for commercial purposes is strictly forbidden.