diff --git a/src/lang/english.txt b/src/lang/english.txt
--- a/src/lang/english.txt
+++ b/src/lang/english.txt
@@ -4559,7 +4559,14 @@ STR_ORDER_DROP_GO_ALWAYS_DEPOT          
 STR_ORDER_DROP_SERVICE_DEPOT                                    :Service if needed
 STR_ORDER_DROP_HALT_DEPOT                                       :Stop
 STR_ORDER_DROP_UNBUNCH                                          :Unbunch
-STR_ORDER_DEPOT_ACTION_TOOLTIP                                  :{BLACK}Select the action to take at this depot
+
+# Depot action tooltips, one per vehicle type
+###length VEHICLE_TYPES
+STR_ORDER_TRAIN_DEPOT_ACTION_TOOLTIP                            :{BLACK}Select the action to take at this depot
+STR_ORDER_ROAD_DEPOT_ACTION_TOOLTIP                             :{BLACK}Select the action to take at this depot
+STR_ORDER_SHIP_DEPOT_ACTION_TOOLTIP                             :{BLACK}Select the action to take at this depot
+STR_ORDER_HANGAR_ACTION_TOOLTIP                                 :{BLACK}Select the action to take at this hangar
+###next-name-looks-similar
 
 STR_ORDER_CONDITIONAL_VARIABLE_TOOLTIP                          :{BLACK}Vehicle data to base jumping on