diff --git a/src/SUMMARY.md b/src/SUMMARY.md
index 8ddce2eda..a0e5f3a6f 100644
--- a/src/SUMMARY.md
+++ b/src/SUMMARY.md
@@ -123,5 +123,4 @@
 - [Appendices](appendices.md)
     - [Macro Follow-Set Ambiguity Formal Specification](macro-ambiguity.md)
     - [Influences](influences.md)
-    - [As-Yet-Undocumented Features](undocumented.md)
     - [Glossary](glossary.md)
diff --git a/src/introduction.md b/src/introduction.md
index ce1f06166..5e9ce2149 100644
--- a/src/introduction.md
+++ b/src/introduction.md
@@ -12,7 +12,7 @@ provides three kinds of material:
 <div class="warning">
 
 Warning: This book is incomplete. Documenting everything takes a while. See
-the [undocumented] page for what is not documented in this book.
+the [GitHub issues] for what is not documented in this book.
 
 </div>
 
@@ -132,9 +132,9 @@ discord. Knowing what people use this book for the most helps direct our
 attention to making those sections the best that they can be.
 
 [book]: ../book/index.html
+[github issues]: https://github.com/rust-lang-nursery/reference/issues
 [standard library]: ../std/index.html
 [the Rust Reference repository]: https://github.com/rust-lang-nursery/reference/
-[big issue]: https://github.com/rust-lang-nursery/reference/issues/9
 [Unstable Book]: https://doc.rust-lang.org/nightly/unstable-book/
 [_Expression_]: expressions.html
 [cargo book]: ../cargo/index.html
@@ -143,5 +143,4 @@ attention to making those sections the best that they can be.
 [lifetime of temporaries]: expressions.html#temporary-lifetimes
 [linkage]: linkage.html
 [rustc book]: ../rustc/index.html
-[undocumented]: undocumented.html
 [Notation]: notation.html
diff --git a/src/undocumented.md b/src/undocumented.md
deleted file mode 100644
index a316a8e6b..000000000
--- a/src/undocumented.md
+++ /dev/null
@@ -1,25 +0,0 @@
-# As-yet-undocumented Features
-
-Several accepted, stabilized, and implemented RFCs lack documentation in this
-reference, The Book, _Rust by Example_, or some combination of those three.
-Until we have written reference documentation for these features, we provide
-links to other sources of information about them. Therefore, expect this list
-to shrink!
-
-- [`libstd` facade]
-- [Trait reform] – some partial documentation exists (the use of `Self`), but
-  not for everything: e.g. coherence and orphan rules.
-- [Flexible target specification] - Some---but not all---flags are documented
-  in [Conditional compilation]
-- [`dllimport`] - one element mentioned but not explained at [FFI attributes]
-- [define `crt_link`]
-- `impl Trait`
-
-[`libstd` facade]: https://github.com/rust-lang/rfcs/pull/40
-[Trait reform]: https://github.com/rust-lang/rfcs/pull/48
-[Attributes]: attributes.html
-[Flexible target specification]: https://github.com/rust-lang/rfcs/pull/131
-[Conditional compilation]: conditional-compilation.html
-[`dllimport`]: https://github.com/rust-lang/rfcs/pull/1717
-[FFI attributes]: attributes.html
-[define `crt_link`]: https://github.com/rust-lang/rfcs/pull/1721