diff --git a/research/B1.md b/research/B1.md
index e89c9a9..3a98a3b 100644
--- a/research/B1.md
+++ b/research/B1.md
@@ -37,3 +37,10 @@ DAL137-PIKIL/1405 M082F370
 
 - Recipient authority could be the FIR code, e.g. EGGX or KZOA, or it could be a SITA(?) address, e.g. PIKCLXS
 - Remarks are not required but are possible, there are examples in [Appendix B of this document](https://www.notams.faa.gov/downloads/ShanwickOceanicClx.pdf) 
+
+EGGX = ATC Oceanic Center
+AFR088 = Flight Number or Callsign
+BALIX = Oceanic Route Entry (Way)Point
+1754 = HHMM ETA UTC over Oceanic Route Entry (Way)Point
+M083 = Mach Number (083=0.83)
+F360 = Flight Level (360=36000ft)