"D": (command_sender("drop", "inventory_selection"),),
     "J": (command_look_scroller("down"),),
     "K": (command_look_scroller("up"),),
-    "P": (command_sender("pick_up"),),
+    "P": (command_sender("pickup"),),
     "Q": (command_quit,),
     "U": (command_sender("use", "inventory_selection"),),
     "W": (command_sender("wait"),),
 
 
 TA_ID 3
 TA_EFFORT 15
-TA_NAME pick_up
+TA_NAME pickup
 
 TA_ID 4
 TA_EFFORT 5
 
             log("You MOVE " + dir + ".")
 
 
-def actor_pick_up(t):
+def actor_pickup(t):
     """Make t pick up (topmost?) Thing from ground into inventory.
 
     Define topmostness by how low the thing's type ID is.
 
     elif standing_on_food(t):
             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
                               if world_db["ThingActions"][id]["TA_NAME"]
-                              == "pick_up"][0]
+                              == "pickup"][0]
     else:
         going_to_known_food_spot = get_dir_to_target(t, "c")
         if not going_to_known_food_spot:
 
     setting no ThingAction with name "wait" remains, call set_world_inactive().
     """
     if name == "wait" or name == "move" or name == "use" or name == "drop" \
-       or name == "pick_up":
+       or name == "pickup":
         world_db["ThingActions"][command_taid.id]["TA_NAME"] = name
         if 1 == world_db["WORLD_ACTIVE"]:
             wait_defined = False
 
 
 def play_pickup():
-    """Try "pick_up" as player's T_COMMAND"."""
+    """Try "pickup" as player's T_COMMAND"."""
     if action_exists("pickup"):
         t = world_db["Things"][0]
         ids = [id for id in world_db["Things"] if id
         if not len(ids):
              log("NOTHING to pick up.")
         else:
-            set_command("pick_up")
+            set_command("pickup")
 
 
 def play_drop(str_arg):
 
 # see the file NOTICE in the root directory of the PlomRogue source package.
 
 
-from server.actions import actor_wait, actor_move, actor_pick_up, actor_drop, \
+from server.actions import actor_wait, actor_move, actor_pickup, actor_drop, \
     actor_use
 
 action_db = {
     "actor_wait": actor_wait,
     "actor_move": actor_move,
-    "actor_pick_up": actor_pick_up,
+    "actor_pickup": actor_pickup,
     "actor_drop": actor_drop,
     "actor_use": actor_use
 }
 
     "T_POSX": (1, False, setter_tpos("X")),
     "wait": (0, False, play_wait),
     "move": (1, False, play_move),
-    "pick_up": (0, False, play_pickup),
+    "pickup": (0, False, play_pickup),
     "drop": (1, False, play_drop),
     "use": (1, False, play_use),
     "ai": (0, False, command_ai)