diff --git a/DungeonSign-Classes.md b/DungeonSign-Classes.md
index 998ba8d..f23e2ea 100644
--- a/DungeonSign-Classes.md
+++ b/DungeonSign-Classes.md
@@ -3,4 +3,6 @@
 | 1st  | [Classes]                 | [Classes]   |
 | 2nd  | {[Class name](scripts#classes)} | Warrior     |
 | 3rd  | N/A                       |             |
-| 4th  | [Trigger](signs#triggers) |             |
\ No newline at end of file
+| 4th  | [Trigger](signs#triggers) |             |
+
+Leaving the trigger empty will generate an interact trigger automatically.
\ No newline at end of file