diff --git a/db/dbsstx.cc b/db/dbsstx.cc
index 92fe9bb..80eb8e5 100755
--- a/db/dbsstx.cc
+++ b/db/dbsstx.cc
@@ -23,8 +23,8 @@
  */
 
 /*
- *  Transactional layer - XingDa
- *  TimeStamp           - Yanzhe 
+ *  Transactional layer of DrTM - XingDa
+ *  TimeStamp  methods          - Yanzhe 
  *
  */
 
diff --git a/oltp/bank.cc b/oltp/bank.cc
index 3db63e9..3d7dc1c 100644
--- a/oltp/bank.cc
+++ b/oltp/bank.cc
@@ -23,7 +23,7 @@
  */
 
 /*
- *  Transaction  - XingDa 
+ *  Bank transactions,settings  - XingDa 
  * 
  */
 
diff --git a/oltp/snapsharechoptpcc.cc b/oltp/snapsharechoptpcc.cc
index 0f33ef7..ecca8bd 100755
--- a/oltp/snapsharechoptpcc.cc
+++ b/oltp/snapsharechoptpcc.cc
@@ -24,9 +24,9 @@
 
 
 /*
- *  Transaction         - Hao Qian
- *  Transaction , bench - XingDa 
- *  TimeStamp           - Yanzhe 
+ *  TPCC chopping impl                        - Hao Qian
+ *  TPCC chopping,DrTM method, bench  setting - XingDa 
+ *  Timestamp sync                            - Yanzhe 
  * 
  */