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-rw-r--r--src/doc/unstable-book/src/language-features/rustc-attrs.md3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/doc/unstable-book/src/language-features/rustc-attrs.md b/src/doc/unstable-book/src/language-features/rustc-attrs.md
index 01450c8fb1f..ad96aaf8281 100644
--- a/src/doc/unstable-book/src/language-features/rustc-attrs.md
+++ b/src/doc/unstable-book/src/language-features/rustc-attrs.md
@@ -3,6 +3,9 @@
 This feature has no tracking issue, and is therefore internal to
 the compiler, not being intended for general use.
 
+Note: `rustc_attrs` enables many rustc-internal attributes and this page
+only discuss a few of them.
+
 ------------------------
 
 The `rustc_attrs` feature allows debugging rustc type layouts by using