From 1c6cd1cf7f589dcfc5c373fd6569e77e666aa76e Mon Sep 17 00:00:00 2001
From: The-Lum <86879521+The-Lum@users.noreply.github.com>
Date: Wed, 25 Jan 2023 19:42:56 +0000
Subject: [PATCH] Upd: Add some documentation

- [x] Add EBNF on README
- [x] Attemps to add some `README.md` on the src
---
 README.md        |  1 +
 stdlib/README.md | 16 ++++++++++++++++
 2 files changed, 17 insertions(+)
 create mode 100644 stdlib/README.md

diff --git a/README.md b/README.md
index ad812c2eb..576869d6d 100644
--- a/README.md
+++ b/README.md
@@ -40,6 +40,7 @@ PlantUML is a component that allows to quickly write:
 The following non-UML diagrams are also supported:
  * [JSON data](http://plantuml.com/json)
  * [YAML data](http://plantuml.com/yaml)
+ * [Extended Backus-Naur Form (EBNF) diagram](http://plantuml.com/ebnf)
  * [Network diagram (nwdiag)](http://plantuml.com/nwdiag)
  * [Wireframe graphical interface or UI mockups (salt)](http://plantuml.com/salt)
  * [Archimate diagram](http://plantuml.com/archimate-diagram)
diff --git a/stdlib/README.md b/stdlib/README.md
new file mode 100644
index 000000000..ac4bb1dd6
--- /dev/null
+++ b/stdlib/README.md
@@ -0,0 +1,16 @@
+# Standard Library (`stdlib`) of PlantUML
+
+This directory contains all the Standard Library (`stdlib`) files on a compressed format (`.repx`).
+
+### Source
+For the source of the Standard Library (`stdlib`):
+
+- See this offficial dedicated source repository:
+  - https://github.com/plantuml/plantuml-stdlib
+- See also this collaboratif repository _(Unofficial PlantUML stdlib)_:
+  - https://github.com/plantuml-stdlib
+
+### Format
+For the compressed format (`.repx`), see this part of code:
+ - [src/net/sourceforge/plantuml/preproc/Stdlib.java](https://github.com/plantuml/plantuml/blob/master/src/net/sourceforge/plantuml/preproc/Stdlib.java)
+