From 2545790aa9a227833f0e1f15bfd5bde0807f8408 Mon Sep 17 00:00:00 2001
From: Wuzzy <almikes@aol.com>
Date: Tue, 10 Jan 2017 03:15:45 +0100
Subject: [PATCH] Add some API info

---
 API.txt    | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 README.txt |  3 +++
 2 files changed, 49 insertions(+)
 create mode 100644 API.txt

diff --git a/API.txt b/API.txt
new file mode 100644
index 00000000..d29f439a
--- /dev/null
+++ b/API.txt
@@ -0,0 +1,46 @@
+# API
+
+This document is a WORK IN PROGRESS.
+
+Currently, it only contains some information about the used groups.
+
+
+Groups
+
+	dig_by_water=1
+		Blocks with this group will drop when they are near flowing water
+
+
+Groups (mostly) used for crafting recipes
+
+	sand=1
+		Sand (any color)
+
+	sandstone=1
+		(Yellow) sandstone and related nodes (chiseled and the like) (only full blocks)
+
+	redsandstone=1
+		Red sandstone and related nodes (chiseled and the like) (only full blocks)
+
+	quartz_block=1
+		Quartz Block and variants (chiseled, pillar, etc.) (only full blocks)
+
+	tree=1
+		Oak Wood, Birch Wood, etc. (tree trunks)
+
+	wood=1
+		Oak Wood Planks, Birch Wood Planks, etc. (only full blocks)
+
+	wood_slab=1
+		Slabs made out of wooden planks
+
+	coal=1
+		Coal of any kind (coal lump)
+
+
+Other groups
+	water=1
+		Water
+
+	lava=1
+		Lava
diff --git a/README.txt b/README.txt
index 7faf240c..a2991971 100644
--- a/README.txt
+++ b/README.txt
@@ -30,6 +30,9 @@ GravGun & Obani for Help in Build struct
 Celeron55 for creating Minetest
 Bob Lennon because it's a pyro-barbare
 
+Info for programmers
+--------------------
+You find interesting and useful infos in API.txt.
 
 License of media (textures and sounds)
 --------------------------------------