diff --git a/Discovery/File-System/OBEX_common.txt b/Discovery/File-System/OBEX_common.txt
index 30e5a0952..5399d7875 100644
--- a/Discovery/File-System/OBEX_common.txt
+++ b/Discovery/File-System/OBEX_common.txt
@@ -1,4 +1,4 @@
-# Information hardware version, software version, serial number, etc. Character sets
+# Information about hardware version, software version, serial number, etc. Character sets
 telecom/devinfo.txt
 # The Real Time Clock
 telecom/rtc.txt
@@ -16,13 +16,13 @@ telecom/cal/luid/*.vcs
 telecom/cal/luid/###.log
 # Change counter
 telecom/cal/luid/cc.log
-# Level 2 access. vCard stream object listing all the Objects in the Phone Book Object Store.
+# vCard stream object listing all the Objects in the Phone Book Object Store. Level 2 access.
 telecom/pb.vcf
 # Own business card
 telecom/pb/0.vcf
 # phone book objects with individual indices
 telecom/pb/1.vcf
-# Level 3 static index access
+# Phone records (insert phone number for hashes). Level 3 static index access
 telecom/pb/###.vcf
 # Supported properties and memory info
 telecom/pb/info.log
@@ -30,7 +30,9 @@ telecom/pb/info.log
 telecom/pb/luid/cc.log
 # Add new entry, Level 4 unique index access
 telecom/pb/luid/.vcf
-# Change log
+# Access unique indices, Level 4 unique index access
+telecom/pb/luid/*.vcf
+# Change log (insert date for ###)
 telecom/pb/luid/###.log
 # Change counter
 telecom/pb/luid/cc.log