diff -r f9a4f4d11c3a -r 92b3b0fcb41f QTfrontend/ui/widget/chatwidget.cpp
--- a/QTfrontend/ui/widget/chatwidget.cpp	Fri May 06 15:45:48 2016 +0200
+++ b/QTfrontend/ui/widget/chatwidget.cpp	Fri May 06 16:08:48 2016 +0200
@@ -210,6 +210,7 @@
     // Chat view
 
     chatText = new QTextBrowser(this);
+    chatText->setWhatsThis(tr("Chat log"));
     chatText->document()->setDefaultStyleSheet(styleSheet());
     chatText->setMinimumHeight(20);
     chatText->setMinimumWidth(10);
@@ -226,6 +227,7 @@
     // Hover:   rgb(13, 5, 68)
 
     chatEditLine = new SmartLineEdit();
+    chatEditLine->setWhatsThis(tr("Enter chat messages here and send them with [Enter]"));
     chatEditLine->setMaxLength(300);
     chatEditLine->setStyleSheet("SmartLineEdit { background-color: rgb(23, 11, 54); padding: 2px 8px; border-width: 0px; border-radius: 7px; } SmartLineEdit:hover, SmartLineEdit:focus { background-color: rgb(13, 5, 68); }");
     chatEditLine->setFixedHeight(24);
@@ -237,6 +239,7 @@
     // Nickname list
 
     chatNicks = new QListView(this);
+    chatNicks->setWhatsThis(tr("List of players"));
     chatNicks->setIconSize(QSize(24, 16));
     chatNicks->setSelectionMode(QAbstractItemView::SingleSelection);
     chatNicks->setEditTriggers(QAbstractItemView::NoEditTriggers);