1 files changed, 10 insertions, 0 deletions
diff --git a/API.md b/API.md
index 91dfe87..8faf520 100644
--- a/API.md
+++ b/API.md
@@ -209,3 +209,13 @@ Returns how many entries have been viewed by a player.
 #### Return value
 Amount of entries the player has viewed in the specified category. If the
 player does not exist, this function returns `nil`.
+
+
+## Extending this mod (naming conventions)
+If you want to extend this mod with your own functionality, it is recommended
+that you put all API functions into `doc.sub.<name>`.
+As a naming convention, if your mod depends on `doc`, your mod name should also start
+with “`doc_`”, like `doc_items`, `doc_minetest_game`, `doc_identifier`.
+
+One mod which uses this convention is `doc_items` which uses the `doc.sub.items`
+table.