--- a/src/jdk.jshell/share/classes/jdk/internal/jshell/tool/resources/l10n.properties	Fri Feb 23 16:28:19 2018 +0000
+++ b/src/jdk.jshell/share/classes/jdk/internal/jshell/tool/resources/l10n.properties	Fri Feb 23 10:25:22 2018 -0800
@@ -454,9 +454,14 @@
      /env -add-modules com.greetings
 
 help.history.summary = history of what you have typed
-help.history.args =
+help.history.args = [-all]
 help.history =\
-Display the history of snippet and command input since this jshell tool was launched.
+Display the history of snippet and command input.\n\
+\n\
+/history\n\t\
+    List the history of snippet and command input since this jshell tool was launched\n\n\
+/history -all\n\t\
+    List all the history of snippet and command input from this and previous sessions
 
 help.debug.summary = toggle debugging of the jshell tool
 help.debug.args = [0][r][g][f][c][d][e]