diff --git a/doc/api.rst b/doc/api.rst
index b1dec0a..23a8256 100644
--- a/doc/api.rst
+++ b/doc/api.rst
@@ -1,6 +1,8 @@
 Glasbey API Reference
 =====================
 
+Glasbey consist of three major functions, documented here.
+
 .. automodule:: glasbey
    :imported-members:
    :members: create_palette, extend_palette, create_block_palette