From 412ac63ff517c7eab5e1cfe0bf239616bd2c13a1 Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Thu, 21 Feb 2019 15:24:42 +0300
Subject: docs

---
 crates/ra_syntax/src/syntax_node.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'crates/ra_syntax/src/syntax_node.rs')

diff --git a/crates/ra_syntax/src/syntax_node.rs b/crates/ra_syntax/src/syntax_node.rs
index aa627398d..a1bc0b499 100644
--- a/crates/ra_syntax/src/syntax_node.rs
+++ b/crates/ra_syntax/src/syntax_node.rs
@@ -1,3 +1,11 @@
+//! This module defines Concrete Syntax Tree (CST), used by rust-analyzer.
+//!
+//! The CST includes comments and whitespace, provides a single node type,
+//! `SyntaxNode`, and a basic traversal API (parent, children, siblings).
+//!
+//! The *real* implementation is in the (language-agnostic) `rowan` crate, this
+//! modules just wraps its API.
+
 use std::{fmt, borrow::Borrow};
 
 use rowan::{Types, TransparentNewType};
-- 
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