diff --git a/src/syntax-intro.md b/src/syntax-intro.md
index 43ef44577..6339a7e6b 100644
--- a/src/syntax-intro.md
+++ b/src/syntax-intro.md
@@ -1,13 +1,19 @@
 # Syntax and the AST
 
-Working directly with source code is very inconvenient and error-prone. Thus,
-before we do anything else, we convert raw source code into an AST. It turns
-out that doing even this involves a lot of work, including lexing, parsing,
-macro expansion, name resolution, conditional compilation, feature-gate
-checking, and validation of the AST. In this chapter, we take a look at all
-of these steps.
+Working directly with source code is very inconvenient and error-prone.
+Thus, before we do anything else, we convert raw source code into an
+[Abstract Syntax Tree (AST)][AST]. It turns out that doing this involves a lot of work,
+including [lexing, parsing], [macro expansion], [name resolution], conditional
+compilation, [feature-gate checking], and [validation] of the [AST].
+In this chapter, we take a look at all of these steps.
 
-Notably, there isn't always a clean ordering between these tasks. For example,
-macro expansion relies on name resolution to resolve the names of macros and
-imports. And parsing requires macro expansion, which in turn may require
-parsing the output of the macro.
+Notably, there isn't always a clean ordering between these tasks.
+For example, macro expansion relies on name resolution to resolve the names of macros and imports.
+And parsing requires macro expansion, which in turn may require parsing the output of the macro.
+
+[AST]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_parse/index.html
+[macro expansion]: ./macro-expansion.md
+[feature-gate checking]: ./feature-gate-ck.md
+[lexing, parsing]: ./lexing-parsing.md
+[name resolution]: ./name-resolution.md
+[validation]: ./ast-validation.md