diff --git a/src/calibre/devices/interface.py b/src/calibre/devices/interface.py
index da8a2cb978..f860fc4720 100644
--- a/src/calibre/devices/interface.py
+++ b/src/calibre/devices/interface.py
@@ -372,7 +372,7 @@ class DevicePlugin(Plugin):
     @classmethod
     def settings(cls):
         '''
-        Should return an opts object. The opts object should have one attribute
+        Should return an opts object. The opts object should have at least one attribute
         `format_map` which is an ordered list of formats for the device.
         '''
         raise NotImplementedError()
diff --git a/src/calibre/gui2/widgets.py b/src/calibre/gui2/widgets.py
index c32b79fb7c..33ee25c433 100644
--- a/src/calibre/gui2/widgets.py
+++ b/src/calibre/gui2/widgets.py
@@ -957,16 +957,19 @@ class LayoutButton(QToolButton):
 
         self.splitter = splitter
         splitter.state_changed.connect(self.update_state)
+        self.setCursor(Qt.PointingHandCursor)
 
     def set_state_to_show(self, *args):
         self.setChecked(False)
         label =_('Show')
         self.setText(label + ' ' + self.label)
+        self.setToolTip(self.text())
 
     def set_state_to_hide(self, *args):
         self.setChecked(True)
         label = _('Hide')
         self.setText(label + ' ' + self.label)
+        self.setToolTip(self.text())
 
     def update_state(self, *args):
         if self.splitter.is_side_index_hidden: