diff --git a/Documentation/sophia-net-signalling.md b/Documentation/sophia-net-signalling.md
index 775c3d0..8cc601a 100644
--- a/Documentation/sophia-net-signalling.md
+++ b/Documentation/sophia-net-signalling.md
@@ -9,11 +9,14 @@ the following Signalling applies:
 |-----------|-----------------------------------|
 |0x80		|STiD135 GS/GSE Packets				|
 |0x81		|AC-3 Audio							|
-|0x82		|PID only used for PCR				|
+|0x82		|PID only used for PCR, no payloads |
 |0x83		|AC-3 True HD Audio                 |
 |0x84       |AC-3+ Audio                        |
 |0x85       |DTS Audio	                        |
-|0x91       |ULE (RFC 4326)                     |
+|0x86       |SCTE 35 Splice Info                |
+|0x87       |ATSC Enhanced-AC-3 Audio           |
+|0x88       |ULE (RFC 4326)                     |
+|0x91       |A52b/AC-3 Audio                    |
 
 ## Descriptors: