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-rw-r--r--cortex-m-rt/macros/src/lib.rs4
1 files changed, 4 insertions, 0 deletions
diff --git a/cortex-m-rt/macros/src/lib.rs b/cortex-m-rt/macros/src/lib.rs
index b6b0fe4..543130c 100644
--- a/cortex-m-rt/macros/src/lib.rs
+++ b/cortex-m-rt/macros/src/lib.rs
@@ -1,3 +1,7 @@
+//! Internal implementation details of `cortex-m-rt`.
+//!
+//! Do not use this crate directly.
+
#![deny(warnings)]
extern crate proc_macro;