diff --git a/Custom-Formats.md b/Custom-Formats.md
index c9d1fdb..eba1a5e 100644
--- a/Custom-Formats.md
+++ b/Custom-Formats.md
@@ -47,6 +47,7 @@ The Value is used for the matching.
 | Regex | R | Is only useful for Edition and Custom Quality Tags. Makes it, that Radarr parses the value of the Quality Tag as a Regex and uses the Regex for matching. |
 | Negate | N | Negates the Quality Tag, i.e. when it normally matches it won't and when it normally wouldn't match it does. |
 | Required | RE | Makes the Quality Tag strongly required. More on that later. |
+| Word Matching | W | Makes the Quality Tag only match full words, e.g. C_W_3D would match Movie.3D.1080p, but not Movie3d.1080p. (Only really useful for edition or custom tags. Would be the same as making a \\bword\\b regex.) |
 
 
 ## Quality Tags Examples