Add paragraph explaing plugin.yml requirenments to new rules section

README.md

@@ -54,6 +54,12 @@ or to Paperlib.
 
 ### The new rules
 
+First, Folia breaks many plugins. To aid users in figuring out which
+plugins work, only plugins that have been explicitly marked by the
+author(s) to work with Folia will be loaded. By placing
+"folia-supported: true" into the plugin's plugin.yml, plugin authors
+can mark their plugin as compatible with regionised multithreading.
+
 The other important rule is that the regions tick in _parallel_, and not 
 _concurrently_. They do not share data, they do not expect to share data,
 and sharing of data _will_ cause data corruption. 

regiontodo.txt

@@ -1,5 +1,6 @@
 Get done before testing:
 - Mob#getTarget?
+- regioniser->regionaliser
 
 Pre-Test: List of things not fully tested
 - Task queue