diff -r 419de2dea82b -r a8fd5490932f QTfrontend/ui/page/pagemain.cpp
--- a/QTfrontend/ui/page/pagemain.cpp	Sun Sep 30 01:41:12 2018 +0200
+++ b/QTfrontend/ui/page/pagemain.cpp	Sun Sep 30 03:18:16 2018 +0200
@@ -113,7 +113,10 @@
     BtnVideos->setWhatsThis(tr("Manage videos recorded from game"));
 #endif
 
-    BtnSetup = addButton(":/res/Settings.png", bottomLayout, 2, true, Qt::AlignBottom);
+    BtnHelp = addButton(":/res/Help.png", bottomLayout, 2, true, Qt::AlignBottom);
+    BtnHelp->setWhatsThis(tr("Open the Hedgewars online game manual in your web browser"));
+
+    BtnSetup = addButton(":/res/Settings.png", bottomLayout, 3, true, Qt::AlignBottom);
     BtnSetup->setWhatsThis(tr("Edit game preferences"));
 
     return bottomLayout;