diff --git a/depends.txt b/depends.txt
index 309189f..d2b2b14 100644
--- a/depends.txt
+++ b/depends.txt
@@ -1 +1,2 @@
 mana?
+doc_items?
diff --git a/init.lua b/init.lua
index bbbab0e..a7380bd 100644
--- a/init.lua
+++ b/init.lua
@@ -110,3 +110,23 @@ minetest.register_tool("returnmirror:mirror_active", {
 })
 
 minetest.register_alias("returnmirror:mirror_inactive", "returnmirror:returnmirror")
+
+if minetest.get_modpath("doc_items") ~= nil then
+	local longdesc, usagehelp
+	usagehelp = "Rightclick to set the mirror's teleport location. Leftclick to immediately teleport back to the mirror's teleport location."
+	if minetest.get_modpath("mana") ~= nil then
+		longdesc ="This item allows to teleport the user back to a previously set location, at the cost of mana."
+		usagehelp = usagehelp .. " " .. string.format("Setting the teleport location costs %d mana, teleporting costs %d mana.", returnmirror.cost_set, returnmirror.cost_teleport)
+	else
+		longdesc = "This item allows to teleport its user back to a previously set location."
+	end
+
+	doc.sub.items.set_items_longdesc({
+		["returnmirror:mirror_inactive"] = longdesc,
+	})
+	doc.sub.items.set_items_usagehelp({
+		["returnmirror:mirror_inactive"] = usagehelp
+	})
+
+	doc.add_entry_alias("tools", "returnmirror:mirror_inactive", "returnmirror:mirror_active")
+end