diff --git a/README.md b/README.md
index 34208d6..68e99e8 100644
--- a/README.md
+++ b/README.md
@@ -60,7 +60,7 @@ Just define what your environment needs in a *yaml*-configfile like:
             done_at_collisions: !!bool True
         ItemRespawn:
             spawn_freq: 5
-        DoorAutoClose: {}
+        DoDoorAutoClose: {}
 
     Assets:
     - Defaults
diff --git a/marl_factory_grid/modules/doors/__init__.py b/marl_factory_grid/modules/doors/__init__.py
index 4f1d0a2..262f556 100644
--- a/marl_factory_grid/modules/doors/__init__.py
+++ b/marl_factory_grid/modules/doors/__init__.py
@@ -1,4 +1,4 @@
 from .actions import DoorUse
 from .entitites import Door, DoorIndicator
 from .groups import Doors
-from .rules import DoorAutoClose, DoorIndicateArea
+from .rules import DoDoorAutoClose, IndicateDoorAreaInObservation
diff --git a/marl_factory_grid/modules/doors/rules.py b/marl_factory_grid/modules/doors/rules.py
index babe61f..3937f4a 100644
--- a/marl_factory_grid/modules/doors/rules.py
+++ b/marl_factory_grid/modules/doors/rules.py
@@ -1,13 +1,19 @@
-from marl_factory_grid.environment.rules import Rule
 from marl_factory_grid.environment import constants as c
+from marl_factory_grid.environment.rules import Rule
 from marl_factory_grid.utils.results import TickResult
 from . import constants as d
 from .entitites import DoorIndicator
 
 
-class DoorAutoClose(Rule):
+class DoDoorAutoClose(Rule):
 
     def __init__(self, close_frequency: int = 10):
+        """
+        This rule closes doors, that have been opened automatically, when no entity is blocking the position.
+
+        :type close_frequency: int
+        :param close_frequency: How many ticks after opening, should the door close?
+        """
         super().__init__()
         self.close_frequency = close_frequency
 
@@ -22,9 +28,16 @@ class DoorAutoClose(Rule):
         return []
 
 
-class DoorIndicateArea(Rule):
+class IndicateDoorAreaInObservation(Rule):
 
     def __init__(self):
+        """
+        Whether to add an indicator aka place a value around doors (within the door tile), for agents to see.
+        This could improve learning.
+
+        """
+        # Todo: Discuss if this rather be a single entity with a standalone observation.
+        #  Could then be combined with the "Combine"-approach.
         super().__init__()
 
     def on_init(self, state, lvl_map):