diff --git a/data/refdata/exchanges.cfg b/data/refdata/exchanges.cfg
index 53bc78a..4482a3b 100644
--- a/data/refdata/exchanges.cfg
+++ b/data/refdata/exchanges.cfg
@@ -47,6 +47,8 @@
     #         }
     #     }
     # }, 
+
+    # ----------------------------- A
     "ALPACA_PROD": {
         # https://docs.alpaca.markets/reference/
         "exchange_id":          "ALPACA"
@@ -219,6 +221,7 @@
             }
         }
     },
+
     # ---------------------------- B
     "BITSTAMP": {
         "exchange_id":          "BITSTAMP"
@@ -336,6 +339,7 @@
         }
     }, 
     
+    # ---------------------------- C
     "COINBASE_AT": {
         "exchange_id":          "COINBASE"
         , "name":               "Coinbase Advanced Trade"