diff --git a/ebml_matroska.xml b/ebml_matroska.xml
index d98d6772..d8b5f092 100644
--- a/ebml_matroska.xml
+++ b/ebml_matroska.xml
@@ -175,7 +175,7 @@ An EBML parser that has no knowledge of the Block structure could still see and
     <extension type="webmproject.org" webm="1"/>
   </element>
   <element name="BlockAdditional" path="\Segment\Cluster\BlockGroup\BlockAdditions\BlockMore\BlockAdditional" id="0xA5" type="binary" minOccurs="1" maxOccurs="1">
-    <documentation lang="en" purpose="definition">Interpreted by the codec as it wishes (using the BlockAddID).</documentation>
+    <documentation lang="en" purpose="definition">Data passed to the Track decoder. See (#block-addition-mappings) for details on the interpretation.</documentation>
     <extension type="webmproject.org" webm="1"/>
   </element>
   <element name="BlockAddID" path="\Segment\Cluster\BlockGroup\BlockAdditions\BlockMore\BlockAddID" id="0xEE" type="uinteger" range="not 0" default="1" minOccurs="1" maxOccurs="1">