diff --git a/flexbe_states/flexbe_states/calculation_state.py b/flexbe_states/flexbe_states/calculation_state.py
index 5baa806..3e1add3 100644
--- a/flexbe_states/flexbe_states/calculation_state.py
+++ b/flexbe_states/flexbe_states/calculation_state.py
@@ -41,9 +41,10 @@ class CalculationState(EventState):
 
     -- calculation  function    The function that performs the desired calculation.
                                 It could be a private function (self.foo) manually defined in a behavior's source code
-                                or a lambda function (e.g., lambda x: x^2, where x will be the input_value).
+                                or a Python lambda function (e.g., lambda x: x**2),
+                                where x is the argument passed to the function.
 
-    ># input_value  object      Input to the calculation function.
+    ># input_value  object      Userdata used as input to the calculation function.
 
     #> output_value object      The result of the calculation.
 
diff --git a/flexbe_states/flexbe_states/check_condition_state.py b/flexbe_states/flexbe_states/check_condition_state.py
index c5d818d..ba15056 100644
--- a/flexbe_states/flexbe_states/check_condition_state.py
+++ b/flexbe_states/flexbe_states/check_condition_state.py
@@ -39,9 +39,11 @@ class CheckConditionState(EventState):
     This state can be used if the further control flow of the behavior depends on a simple condition.
 
     -- predicate    function    The condition whose truth value will be evaluated.
-                                Has to expect one parameter which will be set to input_value and return a boolean.
+                                Has to expect one parameter which will be set to input_value and return a boolean,
+                                e.g. a Python lambda function (lambda x: x == 3),
+                                where x is the argument passed to the function.
 
-    ># input_value  object      Input to the predicate function.
+    ># input_value  object      Userdata used as input to the predicate function.
 
     <= true                     Returned if the condition evaluates to True
     <= false                    Returned if the condition evaluates to False
diff --git a/flexbe_states/flexbe_states/flexible_calculation_state.py b/flexbe_states/flexbe_states/flexible_calculation_state.py
index 2079ac7..43ba5ca 100644
--- a/flexbe_states/flexbe_states/flexible_calculation_state.py
+++ b/flexbe_states/flexbe_states/flexible_calculation_state.py
@@ -41,8 +41,10 @@ class FlexibleCalculationState(EventState):
 
     -- calculation  function    The function that performs the desired calculation.
                                 It could be a private function (self.foo) manually defined in a behavior's source code
-                                or a lambda function (e.g., lambda x: x[0]^2 + x[1]^2).
-    -- input_keys   string[]    List of available input keys.
+                                or a Python lambda function (e.g., lambda x: x[0]**2 + x[1]**2),
+                                where x is the list argument passed to the function.
+
+    -- input_keys   string[]    List of userdata keys used to create a list of input data for calculation.
 
     ># input_keys   object[]    Input(s) to the calculation function as a list of userdata.
                                 The individual inputs can be accessed as list elements (see lambda expression example).
diff --git a/flexbe_states/flexbe_states/flexible_check_condition_state.py b/flexbe_states/flexbe_states/flexible_check_condition_state.py
index 6065fff..0b863d1 100644
--- a/flexbe_states/flexbe_states/flexible_check_condition_state.py
+++ b/flexbe_states/flexbe_states/flexible_check_condition_state.py
@@ -44,7 +44,9 @@ class FlexibleCheckConditionState(EventState):
 
     -- predicate    function    The condition whose truth value will be evaluated.
                                 It could be a private function (self.foo) manually defined in a behavior's source code
-                                or a lambda function (e.g., lambda x: x[0]^2 + x[1]^2).
+                                or a lambda function (e.g., lambda x: x[0]**2 < 10 and x[1] == 'hello'),
+                                where x is the list argument passed to the function.
+
     -- input_keys   string[]    List of available input keys.
 
     ># input_keys   object[]    Input(s) to the calculation function as a list of userdata.