diff --git a/Usage:-Plot-flags.md b/Usage:-Plot-flags.md
index 71a7673..5e0b8c7 100644
--- a/Usage:-Plot-flags.md
+++ b/Usage:-Plot-flags.md
@@ -14,6 +14,7 @@ worlds:
       use: "64,71,96,167,193,194,195,196,197,77,143,69,70,72,147,148,107,183,184,185,186,187,132"
 ```
 *where `<world>` indicates the name of that plotworld.
+Ids: http://minecraft-ids.grahamedgecombe.com/
 ## Flag types:
 #### - String
 Accepts any letter, number, space, color codes, and a few symbols.