diff --git a/src/interface.jl b/src/interface.jl
index 3b10b2f..6682a5c 100644
--- a/src/interface.jl
+++ b/src/interface.jl
@@ -332,6 +332,9 @@ end
 julia> 
 ```
 
+# TODO
+  [PENDING] add Reflect()
+
 # Signature
 """
 function isterminal(state::T)::Tuple{Bool, <:Number} where {T<:AbstractDict}
diff --git a/src/mcts.jl b/src/mcts.jl
index a0c7de4..b751556 100644
--- a/src/mcts.jl
+++ b/src/mcts.jl
@@ -415,6 +415,7 @@ julia>
 
 # TODO
   [] update docstring
+  [PENDING] return best plan
 
 # Signature
 """
@@ -441,7 +442,6 @@ function runMCTS(
     expand(a, node, decisionMaker, progressValueEstimator, isterminal, n=n)
     
     leaf_node = selectChildNode(node)
-    # BUG i didn't assign parent node for this leaf node yet
     simTrajectoryReward = simulate(a, leaf_node, decisionMaker, progressValueEstimator,
                       isterminal, maxDepth, n=n)
     backpropagate(leaf_node, simTrajectoryReward)