diff --git a/README.md b/README.md
index af6c569..26af82f 100644
--- a/README.md
+++ b/README.md
@@ -108,7 +108,11 @@ Standalone executables (made with [PyInstaller](https://pyinstaller.org/en/stabl
 
 ## TODO
 
-Write documentation.
+Write documentation:
+- Features;
+- Specification;
+- Design rationale;
+- User guide.
 
 ## Feedback