diff --git a/openflexure_microscope/microscope.py b/openflexure_microscope/microscope.py
index a5e51930..8c016101 100644
--- a/openflexure_microscope/microscope.py
+++ b/openflexure_microscope/microscope.py
@@ -25,7 +25,7 @@ class Microscope(object):
         self.attach(camera, stage)
 
         # Create plugin mountpoint
-        self.plugin = PluginMount(self)
+        self.plugin = PluginMount(self)  #: :py:class:`openflexure_microscope.plugins.PluginMount`: Mounting point for all microscope plugins
 
     def __enter__(self):
         """Create microscope on context enter."""
diff --git a/openflexure_microscope/plugins/loader.py b/openflexure_microscope/plugins/loader.py
index 883f1f82..63b8fd8c 100644
--- a/openflexure_microscope/plugins/loader.py
+++ b/openflexure_microscope/plugins/loader.py
@@ -85,6 +85,12 @@ class PluginMount(object):
         print("Creating plugin mount")
 
     def attach(self, plugin_module):
+        """
+        Attach a MicroscopePlugin instance to the plugin mount.
+
+        Args:
+            plugin_module: A loaded module to be attached. Module can be loaded using :py:meth:`openflexure_microscope.plugins.load_plugin`
+        """
         if not hasattr(plugin_module, 'PLUGINS') or not isinstance(plugin_module.PLUGINS, dict):
             raise Exception("No falid PLUGINS dictionary found in {}".format(plugin_module))