diff --git a/xwords4/android/XWords4/res/values/common_rsrc.xml b/xwords4/android/XWords4/res/values/common_rsrc.xml
index 0d9e4b96a..fd8cd9e03 100644
--- a/xwords4/android/XWords4/res/values/common_rsrc.xml
+++ b/xwords4/android/XWords4/res/values/common_rsrc.xml
@@ -54,6 +54,7 @@
   <string name="key_notagain_conndfirst">key_notagain_conndfirst</string>
   <string name="key_notagain_conndmid">key_notagain_conndmid</string>
   <string name="key_notagain_dicts">key_notagain_dicts</string>
+  <string name="key_notagain_arrow">key_notagain_arrow</string>
 
   <string name="relayids_extra">org.eehouse.android.xw4.relayids_extra</string>
   
diff --git a/xwords4/android/XWords4/res/values/strings.xml b/xwords4/android/XWords4/res/values/strings.xml
index 808b87952..90be8b49e 100644
--- a/xwords4/android/XWords4/res/values/strings.xml
+++ b/xwords4/android/XWords4/res/values/strings.xml
@@ -488,6 +488,14 @@
       here.  Email me at eehouse@eehouse.org for information on building
       and installing your own dictionaries.</string>
 
+    <string name="not_again_arrow">Moving tiles to the board:\nYou can
+      drag tiles between the rack and the board, or you can tap an
+      empty square to place the board arrow. Rack tiles you tap will
+      replace the arrow (moving it one square in the direction it
+      points.)  Tap the arrow once to change its orientation; a second
+      time, to hide it. A checkbox in the Appearance section of
+      Settings will hide it permanently.</string>
+
     <string name="relay_game_explainf">To start a basic networked two-player
     game in %s:</string>
 
diff --git a/xwords4/android/XWords4/src/org/eehouse/android/xw4/BoardActivity.java b/xwords4/android/XWords4/src/org/eehouse/android/xw4/BoardActivity.java
index 7e4840048..524d639a9 100644
--- a/xwords4/android/XWords4/src/org/eehouse/android/xw4/BoardActivity.java
+++ b/xwords4/android/XWords4/src/org/eehouse/android/xw4/BoardActivity.java
@@ -830,7 +830,7 @@ public class BoardActivity extends XWActivity implements UtilCtxt {
                            } );
             m_jniThread.start();
 
-            m_view.startHandling( m_jniThread, m_jniGamePtr, m_gi );
+            m_view.startHandling( this, m_jniThread, m_jniGamePtr, m_gi );
             if ( null != m_xport ) {
                 m_xport.setReceiver( m_jniThread );
             }
diff --git a/xwords4/android/XWords4/src/org/eehouse/android/xw4/BoardView.java b/xwords4/android/XWords4/src/org/eehouse/android/xw4/BoardView.java
index d3cd11639..f25ca08ed 100644
--- a/xwords4/android/XWords4/src/org/eehouse/android/xw4/BoardView.java
+++ b/xwords4/android/XWords4/src/org/eehouse/android/xw4/BoardView.java
@@ -66,6 +66,7 @@ public class BoardView extends View implements DrawCtx, BoardHandler,
     private Drawable m_origin;
     private int m_left, m_top;
     private JNIThread m_jniThread;
+    private XWActivity m_parent;
     private String[][] m_scores;
     private String[] m_dictChars;
     private Rect m_boundsScratch;
@@ -286,8 +287,10 @@ public class BoardView extends View implements DrawCtx, BoardHandler,
     } // layoutBoardOnce
 
     // BoardHandler interface implementation
-    public void startHandling( JNIThread thread, int gamePtr, CurGameInfo gi ) 
+    public void startHandling( XWActivity parent, JNIThread thread, 
+                               int gamePtr, CurGameInfo gi ) 
     {
+        m_parent = parent;
         m_jniThread = thread;
         m_jniGamePtr = gamePtr;
         m_gi = gi;
@@ -506,6 +509,7 @@ public class BoardView extends View implements DrawCtx, BoardHandler,
         return true;
     } // drawCell
 
+    private boolean m_arrowHintShown = false;
     public void drawBoardArrow( Rect rect, int bonus, boolean vert, 
                                 int hintAtts, int flags )
     {
@@ -513,6 +517,18 @@ public class BoardView extends View implements DrawCtx, BoardHandler,
         Drawable arrow = vert? m_downArrow : m_rightArrow;
         arrow.setBounds( rect );
         arrow.draw( m_canvas );
+
+        if ( !m_arrowHintShown ) {
+            m_arrowHintShown = true;
+            m_viewHandler.post( new Runnable() {
+                    public void run() {
+                        m_parent.
+                            showNotAgainDlgThen( R.string.not_again_arrow, 
+                                                 R.string.key_notagain_arrow, 
+                                                 null );
+                    }
+                } );
+        }
     }
 
     public boolean trayBegin ( Rect rect, int owner, int dfs ) 
diff --git a/xwords4/android/XWords4/src/org/eehouse/android/xw4/jni/BoardHandler.java b/xwords4/android/XWords4/src/org/eehouse/android/xw4/jni/BoardHandler.java
index b803e2ff8..bdadcdecd 100644
--- a/xwords4/android/XWords4/src/org/eehouse/android/xw4/jni/BoardHandler.java
+++ b/xwords4/android/XWords4/src/org/eehouse/android/xw4/jni/BoardHandler.java
@@ -1,3 +1,4 @@
+/* -*- compile-command: "cd ../../../../../../; ant install"; -*- */
 /*
  * Copyright 2009-2010 by Eric House (xwords@eehouse.org).  All
  * rights reserved.
@@ -19,8 +20,11 @@
 
 package org.eehouse.android.xw4.jni;
 
+import org.eehouse.android.xw4.XWActivity;
+
 public interface BoardHandler {
 
-    void startHandling( JNIThread thread, int gamePtr, CurGameInfo gi );
+    void startHandling( XWActivity parent, JNIThread thread, 
+                        int gamePtr, CurGameInfo gi );
 
 }