Bind a few utilities to special keys in default config

config.in

@@ -195,6 +195,19 @@ mode "resize" {
     bindsym Escape mode "default"
 }
 bindsym $mod+r mode "resize"
+#
+# Utilities:
+#
+    # Special keys to adjust volume via PulseAudio
+    bindsym --locked XF86AudioMute exec pactl set-sink-mute \@DEFAULT_SINK@ toggle
+    bindsym --locked XF86AudioLowerVolume exec pactl set-sink-volume \@DEFAULT_SINK@ -5%
+    bindsym --locked XF86AudioRaiseVolume exec pactl set-sink-volume \@DEFAULT_SINK@ +5%
+    bindsym --locked XF86AudioMicMute exec pactl set-source-mute \@DEFAULT_SOURCE@ toggle
+    # Special keys to adjust brightness via brightnessctl
+    bindsym --locked XF86MonBrightnessDown exec brightnessctl set 5%-
+    bindsym --locked XF86MonBrightnessUp exec brightnessctl set 5%+
+    # Special key to take a screenshot with grim
+    bindsym Print exec grim
 
 #
 # Status Bar: