diff -r 419de2dea82b -r a8fd5490932f QTfrontend/hwform.cpp
--- a/QTfrontend/hwform.cpp	Sun Sep 30 01:41:12 2018 +0200
+++ b/QTfrontend/hwform.cpp	Sun Sep 30 03:18:16 2018 +0200
@@ -246,6 +246,7 @@
     connect(ui.pageMain->BtnDataDownload, SIGNAL(clicked()), pageSwitchMapper, SLOT(map()));
     pageSwitchMapper->setMapping(ui.pageMain->BtnDataDownload, ID_PAGE_DATADOWNLOAD);
 
+    connect(ui.pageMain->BtnHelp, SIGNAL(clicked()), this, SLOT(GoToHelp()));
 
 #ifdef VIDEOREC
     connect(ui.pageMain->BtnVideos, SIGNAL(clicked()), pageSwitchMapper, SLOT(map()));
@@ -641,6 +642,13 @@
     GoToPage(ID_PAGE_SCHEME);
 }
 
+void HWForm::GoToHelp()
+{
+    // For now just opens the Hedgewars Wiki in external browser.
+    // TODO: Replace this with an offline help someday (bug 660).
+    QDesktopServices::openUrl(QUrl("https://hedgewars.org/wiki"));
+}
+
 void HWForm::GoToVideos()
 {
     GoToPage(ID_PAGE_VIDEOS);