intro to world types 9th edition for $359.99

wiki/misc/worldtypes.md

@@ -1,3 +1,11 @@
+---
+title: Adding a Custom World Preset
+---
+
+# Adding custom world presets
+If your mod completely overhauls Minecraft's worldgen, you'll want to create a custom worldtype so you give people the option to use your worldgen or MC's vanilla worldgen.
+Now, what is a custom worldtype you may ask? World types define world generation options for Minecraft worlds. They let you change the make-up of your Minecraft worlds by configuring how world generation behaves.
+
 ```json
 "dimensions": {
   "minecraft:overworld": {