diff --git a/Signs.md b/Signs.md
index b0f822f..cc5b13c 100644
--- a/Signs.md
+++ b/Signs.md
@@ -481,10 +481,10 @@ The drop sign will spawn dropped items at its location. The second line may cont
 
 ### Open door
 
-_Currently broken :(_
-
 ![Open door sign](http://feuerstern.bplaced.net/ressourcen/DXLSigns/Door.png)
 
+The door sign locks and protects its attached door. If the sign is triggered, the door opens.
+
 ***
 
 ### Script
@@ -516,8 +516,11 @@ ResourcePack signs get enabled before the game starts and generate an interact t
 ***
 
 ### BossShop
+
 ![BossShop sign](http://feuerstern.bplaced.net/ressourcen/DXLSigns/BossShop.png)
 
+The BossShop sign provides basic integration with blackixx' [BossShop](https://www.spigotmc.org/resources/bossshop-powerful-and-playerfriendly-chest-gui-shop-menu-plugin.222/) plugin. BossShop is a powerful, free, open source and user-friendly solution to easily script inventory GUIs and shops.
+
 ***
 
 ## Triggers