Index: binaries/data/mods/public/gui/session/menu.js
===================================================================
--- binaries/data/mods/public/gui/session/menu.js
+++ binaries/data/mods/public/gui/session/menu.js
@@ -66,6 +66,23 @@
 // Redefined every time someone makes a tribute (so we can save some data in a closure). Called in input.js handleInputBeforeGui.
 var g_FlushTributing = function() {};
 
+var g_MenuButtons = {
+	"menuButton": { "hotkey": "session.gui.menu.toggle",  "description": "Toggle in-game menu." },
+	"manualButton": { "description": "Show the game manual." },
+	"saveGameButton": { "description": "Save the current game." },
+	"summaryButton": { "hotkey": "summary",  "description": "Show the summary dialog." },
+	"lobbyButton": { "hotkey": "lobby",  "description": "Show the multiplayer lobby in a dialog.", "enabled": () => Engine.HasXmppClient() },
+	"chatButton": { "hotkey": [
+			{ "hotkey": "chat", "description": translate("Chat"), "showOnlyWhenUsed": true },
+			{ "hotkey": "teamchat", "description": translate("Team chat"), "showOnlyWhenUsed": true },
+			{ "hotkey": "privatechat", "description": translate("Private chat"), "showOnlyWhenUsed": true }
+	] },
+	"optionsButton": { "description": "Show the options dialog." },
+	"pauseButton": { "hotkey": "pause",  "description": "Toggle pause the game.", "enabled": () => !g_IsObserver || !g_IsNetworked || g_IsController },
+	"menuResignButton": { "description": "Resign from the current game.", "enabled": () => !g_IsObserver },
+	"menuExitButton": { "description": "Exit from the current game." }
+};
+
 function initSessionMenuButtons()
 {
 	initMenuPosition();
@@ -74,6 +91,34 @@
 	resizeTradeDialog();
 }
 
+function updateMenuButtons()
+{
+	let colorizedHotkey = name => {
+		let hotkey = Engine.ConfigDB_GetValue("user", "hotkey." + name);
+		return hotkey != "unused" && hotkey != "" ? coloredText("\\[" + hotkey + "]", g_HotkeyColor) : "";
+	}
+
+	let getTooltip = (hotkey, description) =>
+		colorizedHotkey(hotkey) == "" ? translate(description) : description != "" ? sprintf(translate("%(hotkey)s: " + description), {
+			"hotkey": colorizedHotkey(hotkey)
+	}) : colorizedHotkey(hotkey);
+
+	for (let name in g_MenuButtons)
+	{
+		let button = g_MenuButtons[name];
+		let enabled = !button.enabled || button.enabled()
+		Engine.GetGUIObjectByName(name).enabled = enabled;
+		if ((!button.hotkey && !button.description) || !enabled)
+			continue;
+		if (button.hotkey && Array.isArray(button.hotkey))
+			Engine.GetGUIObjectByName(name).tooltip = button.hotkey.map(tooltip =>
+				tooltip.showOnlyWhenUsed !== undefined && colorizedHotkey(tooltip.hotkey) == "" ? "" :
+				getTooltip(tooltip.hotkey, tooltip.description)).join("\n");
+		else if (!button.hotkey || typeof(button.hotkey) == 'string')
+			Engine.GetGUIObjectByName(name).tooltip = getTooltip(button.hotkey || "", button.description || "");
+	}
+}
+
 function initMenuPosition()
 {
 	Engine.GetGUIObjectByName("menu").size = "100%-164 " + MENU_TOP + " 100% " + MENU_BOTTOM;
Index: binaries/data/mods/public/gui/session/menu.xml
===================================================================
--- binaries/data/mods/public/gui/session/menu.xml
+++ binaries/data/mods/public/gui/session/menu.xml
@@ -62,7 +62,6 @@
 			hotkey="lobby"
 		>
 			<translatableAttribute id="caption">Lobby</translatableAttribute>
-			<translatableAttribute id="tooltip">Show the multiplayer lobby in a dialog window.</translatableAttribute>
 			<action on="Press">lobbyDialogButton();</action>
 		</object>
 
Index: binaries/data/mods/public/gui/session/session.js
===================================================================
--- binaries/data/mods/public/gui/session/session.js
+++ binaries/data/mods/public/gui/session/session.js
@@ -613,9 +613,7 @@
 	alphaLabel.hidden = isPlayer && !viewPlayer.hidden;
 	alphaLabel.size = isPlayer ? "50%+44 0 100%-283 100%" : "155 0 85%-279 100%";
 
-	Engine.GetGUIObjectByName("pauseButton").enabled = !g_IsObserver || !g_IsNetworked || g_IsController;
-	Engine.GetGUIObjectByName("menuResignButton").enabled = !g_IsObserver;
-	Engine.GetGUIObjectByName("lobbyButton").enabled = Engine.HasXmppClient();
+	updateMenuButtons();
 }
 
 function reportPerformance(time)