diff --git a/core/biome_generator/chunk_info.gd b/core/biome_generator/chunk_info.gd
index 42c0b6e..e66f1ca 100644
--- a/core/biome_generator/chunk_info.gd
+++ b/core/biome_generator/chunk_info.gd
@@ -6,17 +6,17 @@ class_name ChunkInfo
 @export_group("Set Piece Rules (Unique pieces)")
 @export var exclusive_biome: String = "" # Es: "Forest"
 
-@export_group("Base exit (no roation)")
+@export_group("Base exit")
 @export var north: bool = false
 @export var est: bool = false
 @export var south: bool = false
 @export var west: bool = false
 
 @export_group("Margin heights (level 0, 1, 2)")
-@export var height_north: int = 0
-@export var height_est: int = 0
-@export var height_south: int = 0
-@export var height_west: int = 0
+@export_range(0, 2, 1) var height_north: int = 0
+@export_range(0, 2, 1) var height_est: int = 0
+@export_range(0, 2, 1) var height_south: int = 0
+@export_range(0, 2, 1) var height_west: int = 0
 
 @export_group("Lamppost")
 @export var have_lamppost: bool = false
diff --git a/core/fireworks.gd b/core/fireworks.gd
index 3565855..0f4dd47 100644
--- a/core/fireworks.gd
+++ b/core/fireworks.gd
@@ -19,7 +19,7 @@ func set_particles_node_color(node: GPUParticles3D, new_color: Color) -> void:
 			unique_mat.shading_mode = BaseMaterial3D.SHADING_MODE_UNSHADED
 			mesh.material = unique_mat
 
-func turnon() -> void:
+func turn_on() -> void:
 	if rocket:
 		rocket.emitting = true
 		
diff --git a/docs/museums/biome_generator/rails.gd b/docs/museums/biome_generator/rails.gd
index 5a7d43b..304b0e2 100644
--- a/docs/museums/biome_generator/rails.gd
+++ b/docs/museums/biome_generator/rails.gd
@@ -52,7 +52,7 @@ func _ready() -> void:
 		build_train()
 		_plan_stops()
 	else:
-		print("WARNING: Draw your Path3D!")
+		print("WARNING: Draw Path3D for rails!")
 
 func build_rails() -> void:
 	var mat_wood = StandardMaterial3D.new()
@@ -112,16 +112,16 @@ func build_rails() -> void:
 		rail_piece.add_child(rail_dx)
 
 func _plan_stops() -> void:
-	var currnet_stops = []
+	var current_stops = []
 	for child in get_children():
 		if child is Marker3D:
 			var offset = curve.get_closest_offset(child.position)
-			currnet_stops.append({
+			current_stops.append({
 				"offset": offset,
 				"position": child.global_position 
 			})
-	currnet_stops.sort_custom(func(a, b): return a["offset"] < b["offset"])
-	for data in currnet_stops:
+	current_stops.sort_custom(func(a, b): return a["offset"] < b["offset"])
+	for data in current_stops:
 		stop_offset.append(data["offset"])
 		stops_position.append(data["position"])
 
@@ -130,9 +130,9 @@ func _input(event: InputEvent) -> void:
 		if event.keycode == KEY_T:
 			_goto_next_stop()
 		elif event.keycode == KEY_F:
-			_test_manual_fires()
+			_test_manual_fireworks()
 
-func _test_manual_fires() -> void:
+func _test_manual_fireworks() -> void:
 	if fireworks_scene == null or train_instance == null: return
 		
 	var firework_number = randi_range(5, 8)
@@ -146,8 +146,8 @@ func _test_manual_fires() -> void:
 		
 		if fire_root.has_method("set_color"):
 			fire_root.set_color(fireworks_colors.pick_random())
-		if fire_root.has_method("turnon"):
-			fire_root.turnon()
+		if fire_root.has_method("turn_on"):
+			fire_root.turn_on()
 		
 		await get_tree().create_timer(randf_range(0.2, 0.6)).timeout
 
@@ -260,8 +260,8 @@ func _execute_stop(go_forward: bool = true) -> void:
 			
 			if fire_root.has_method("set_color"):
 				fire_root.set_color(fireworks_colors.pick_random())
-			if fire_root.has_method("turnon"):
-				fire_root.turnon() 
+			if fire_root.has_method("turn_on"):
+				fire_root.turn_on() 
 				
 			await get_tree().create_timer(randf_range(0.3, 0.8)).timeout