diff --git a/README.md b/README.md
index a5e7f63..1ea07bc 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,8 @@ The main goals for this playlist are listed below.
 
 The less channels we support the better. The less countries we support the better.
 
-- All channels should work well and be in HD.
+- All channels should work well.
+- As much as possible channels should be in HD, not SD.
 - Only one URL per channel (no +1, no alternate feeds, no regional declinations)
 
 **Only free channels**
@@ -42,6 +43,10 @@ Each .md file represesnts a group. The `<h1>` line is used as the group title.
   
 Only channels which URL column starts with `[>]` are included in the playlist.
 
+Channels which are not in HD are marked with an `Ⓢ`.
+
+Channels which use GeoIP blocking are marked with a `Ⓖ`.
+
 Issues
 ======