diff --git a/resources/cards.json b/resources/cards.json
index 2ab8e1b..8eb90c2 100644
--- a/resources/cards.json
+++ b/resources/cards.json
@@ -2,79 +2,66 @@
 	{
 		"id": "init",
 		"command": "git init",
-		"arg_number": 0,
 		"description": "Initialize the time machine!"
 	},
 	{
 		"id": "checkout",
-		"command": "git checkout",
-		"arg_number": 1,
+		"command": "git checkout [commit, ref]",
 		"description": "Drag this card to a commit or to a branch to travel to it!"
 	},
 	{
 		"id": "commit-auto",
 		"command": "git add .; git commit",
-		"arg_number": 0,
 		"description": "Make a new commit containing your current environment!\nDrag this card anywhere. You'll be asked to enter a short description of what you changed."
 	},
 	{
 		"id": "merge",
-		"command": "git merge",
-		"arg_number": 1,
+		"command": "git merge [commit]",
 		"description": "Merge the specified timeline into yours. If necessary, will create a merge commit."
 	},
 	{
 		"id": "rebase",
-		"command": "git rebase",
-		"arg_number": 1,
+		"command": "git rebase [commit]",
 		"description": "Put the events in your current timeline on top of the specified one."
 	},
 	{
 		"id": "pull",
 		"command": "git pull",
-		"arg_number": 0,
 		"description": "Get timelines from a colleague."
 	},
 	{
 		"id": "push",
 		"command": "git push",
-		"arg_number": 0,
 		"description": "Give timelines to a colleague."
 	},
 	{
 		"id": "rebase-interactive",
-		"command": "git rebase -i",
-		"arg_number": 1,
+		"command": "git rebase -i [commit]",
 		"description": "Make changes to the events in your current timeline, back to the commit you drag this to."
 	},
 	{
 		"id": "reset-hard",
-		"command": "git reset --hard",
-		"arg_number": 1,
+		"command": "git reset --hard [commit]",
 		"description": "Move the branch you're on to the specified commit."
 	},
 	{
 		"id": "cherry-pick",
-		"command": "git cherry-pick",
-		"arg_number": 1,
+		"command": "git cherry-pick [commit]",
 		"description": "Repeat the specified action on top of your current timeline."
 	},
 	{
 		"id": "bisect-start",
 		"command": "git bisect start",
-		"arg_number": 0,
 		"description": "Start looking for the commit where things got bad."
 	},
 	{
 		"id": "bisect-good",
 		"command": "git bisect good",
-		"arg_number": 0,
 		"description": "State that the current commit is good! When you're automatically transferred, keep playing the `good` and `bad` cards!"
 	},
 	{
 		"id": "bisect-bad",
 		"command": "git bisect bad",
-		"arg_number": 0,
 		"description": "State that the current commit is bad! When you're automatically transferred, keep playing the `good` and `bad` cards!"
 	}
 ]
diff --git a/scenes/card.gd b/scenes/card.gd
index f20bec6..0e718dd 100644
--- a/scenes/card.gd
+++ b/scenes/card.gd
@@ -4,7 +4,6 @@ var hovered = false
 var dragged = false
 var drag_offset
 
-export var arg_number = 0
 export var id = "" setget set_id
 export var command = "" setget set_command
 export var description = "" setget set_description
@@ -43,6 +42,7 @@ func _unhandled_input(event):
 		if event.button_index == BUTTON_LEFT and event.pressed and hovered:
 			dragged = true
 			game.dragged_object = self
+			_turn_on_highlights()
 			$PickupSound.play()
 			drag_offset = get_viewport().get_mouse_position() - global_position
 			get_tree().set_input_as_handled()
@@ -50,16 +50,32 @@ func _unhandled_input(event):
 		elif event.button_index == BUTTON_LEFT and !event.pressed and dragged:
 			dragged = false
 			game.dragged_object = null
+			_turn_off_highlights()
 			modulate.a = 1
 			
 			if get_viewport().get_mouse_position().y < get_viewport().size.y/3*2:
-				if arg_number == 0 :
-					try_play($Label.text)
-				else:
-					move_back()
+#				if arg_number == 0 :
+#					try_play($Label.text)
+#				else:
+#					move_back()
+				pass
 			else:
 				move_back()
 
+func _turn_on_highlights():
+	var arg_regex = RegEx.new()
+	arg_regex.compile("\\[(.*)\\]")
+	var m = arg_regex.search(command)
+	if m:
+		var types = Array(m.get_string(1).split(","))
+		for type in types:
+			for area in get_tree().get_nodes_in_group("drop_areas"):
+				area.highlight(type.strip_edges())
+		
+func _turn_off_highlights():
+	for area in get_tree().get_nodes_in_group("drop_areas"):
+		area.highlighted = false
+				
 func _mouse_entered():
 	hovered = true
 	z_index = 1
@@ -91,24 +107,21 @@ func move_back():
 	position = _home_position
 	rotation_degrees = _home_rotation
 	$ReturnSound.play()
-	
-func buuurn():
-	move_back()
 
 func dropped_on(other):
 	var full_command = ""
-	match arg_number:
-		1:	
-			var argument = other.id
-			if ($Label.text.begins_with("git checkout") or $Label.text.begins_with("git rebase")) and other.id.begins_with("refs/heads"):
-				argument = Array(other.id.split("/")).pop_back()
-			full_command = $Label.text + " " + argument
-			try_play(full_command)
+#	match arg_number:
+#		1:	
+#			var argument = other.id
+#			if ($Label.text.begins_with("git checkout") or $Label.text.begins_with("git rebase")) and other.id.begins_with("refs/heads"):
+#				argument = Array(other.id.split("/")).pop_back()
+#			full_command = $Label.text + " " + argument
+#			try_play(full_command)
 #		2:
 #			if _first_argument:
 #				full_command = $Label.text + " " + _first_argument + " " + other.id
 #				$"../Terminal".send_command(full_command)
-#				buuurn()
+#				move_back()
 #			else:
 #				_first_argument = other.id
 
@@ -121,7 +134,7 @@ func try_play(full_command):
 		var particles = preload("res://scenes/card_particles.tscn").instance()
 		particles.position = position
 		get_parent().add_child(particles)
-		buuurn()
+		move_back()
 		game.energy -= energy
 	else:
 		move_back()
diff --git a/scenes/cards.gd b/scenes/cards.gd
index 04df991..c9273be 100644
--- a/scenes/cards.gd
+++ b/scenes/cards.gd
@@ -38,7 +38,6 @@ func draw_card(card):
 	
 	new_card.id = card["id"]
 	new_card.command = card["command"]
-	new_card.arg_number = int(card["arg_number"])
 	new_card.description = card["description"]
 	new_card.energy = 0 #card.energy
 	new_card.position = Vector2(rect_size.x, rect_size.y*2)
diff --git a/scenes/drop_area.gd b/scenes/drop_area.gd
index ae86a5f..0624628 100644
--- a/scenes/drop_area.gd
+++ b/scenes/drop_area.gd
@@ -1,6 +1,7 @@
 extends Node2D
 
 var hovered = false
+var highlighted = false setget _set_highlighted
 
 func _ready():
 	pass
@@ -16,3 +17,14 @@ func _input(event):
 		if event.button_index == BUTTON_LEFT and !event.pressed and hovered:
 			if game.dragged_object:
 				game.dragged_object.dropped_on($"..")
+
+func _set_highlighted(new_highlighted):
+	highlighted = new_highlighted
+	$Highlight.visible = highlighted
+
+func highlight(type):
+	print("highlight:")
+	print(type)
+	print(get_parent().type)
+	if get_parent().type == type:
+		_set_highlighted(true)
diff --git a/scenes/drop_area.tscn b/scenes/drop_area.tscn
index 1ee8eb4..27881eb 100644
--- a/scenes/drop_area.tscn
+++ b/scenes/drop_area.tscn
@@ -1,12 +1,14 @@
-[gd_scene load_steps=3 format=2]
+[gd_scene load_steps=4 format=2]
 
 [ext_resource path="res://scenes/drop_area.gd" type="Script" id=1]
-
+[ext_resource path="res://nodes/blob.svg" type="Texture" id=2]
 
 [sub_resource type="CircleShape2D" id=1]
 radius = 23.5871
 
-[node name="DropArea" type="Node2D"]
+[node name="DropArea" type="Node2D" groups=[
+"drop_areas",
+]]
 position = Vector2( -0.197731, 0.0673599 )
 script = ExtResource( 1 )
 
@@ -14,5 +16,14 @@ script = ExtResource( 1 )
 
 [node name="CollisionShape2D" type="CollisionShape2D" parent="Area2D"]
 shape = SubResource( 1 )
+
+[node name="Highlight" type="Node2D" parent="."]
+visible = false
+
+[node name="Sprite" type="Sprite" parent="Highlight"]
+modulate = Color( 0.65098, 0.560784, 0.890196, 0.533333 )
+position = Vector2( -0.302719, 0.302704 )
+scale = Vector2( 1.64865, 1.64865 )
+texture = ExtResource( 2 )
 [connection signal="mouse_entered" from="Area2D" to="." method="_mouse_entered"]
 [connection signal="mouse_exited" from="Area2D" to="." method="_mouse_exited"]