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				@@ -154,9 +154,8 @@ class OneHotPartialObsWrapper(gym.core.ObservationWrapper): 
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				 class RGBImgObsWrapper(gym.core.ObservationWrapper): 
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				     """ 
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				-    Wrapper to use fully observable RGB image as the only observation output, 
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				-    no language/mission. This can be used to have the agent to solve the 
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				-    gridworld in pixel space. 
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				+    Wrapper to use fully observable RGB image as observation, 
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				+    This can be used to have the agent to solve the gridworld in pixel space. 
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				     """ 
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				     def __init__(self, env, tile_size=8): 
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				@@ -188,7 +187,7 @@ class RGBImgObsWrapper(gym.core.ObservationWrapper): 
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				 class RGBImgPartialObsWrapper(gym.core.ObservationWrapper): 
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				     """ 
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				-    Wrapper to use partially observable RGB image as the only observation output 
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				+    Wrapper to use partially observable RGB image as observation. 
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				     This can be used to have the agent to solve the gridworld in pixel space. 
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				     """ 
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