diff --git a/src/main/java/com/google/cloud/spanner/jdbc/JdbcDriver.java b/src/main/java/com/google/cloud/spanner/jdbc/JdbcDriver.java
index 54d699b65..cdefb7363 100644
--- a/src/main/java/com/google/cloud/spanner/jdbc/JdbcDriver.java
+++ b/src/main/java/com/google/cloud/spanner/jdbc/JdbcDriver.java
@@ -84,6 +84,13 @@
  *       instance and database in the connection string will automatically be created if these do
  *       not yet exist on the emulator. This means that you do not need to execute any `gcloud`
  *       commands on the emulator to create the instance and database before you can connect to it.
+ *       Setting this property to true also enables running concurrent transactions on the emulator.
+ *       The emulator aborts any concurrent transaction on the emulator, and the JDBC driver works
+ *       around this by automatically setting a savepoint after each statement that is executed.
+ *       When the transaction has been aborted by the emulator and the JDBC connection wants to
+ *       continue with that transaction, the transaction is replayed up until the savepoint that had
+ *       automatically been set after the last statement that was executed before the transaction
+ *       was aborted by the emulator.
  *   <li>endpoint (string): Set this property to specify a custom endpoint that the JDBC driver
  *       should connect to. You can use this property in combination with the autoConfigEmulator
  *       property to instruct the JDBC driver to connect to an emulator instance that uses a