diff --git a/.clang-format b/.clang-format
index 667d2a3..396e596 100644
--- a/.clang-format
+++ b/.clang-format
@@ -1,3 +1,6 @@
+# Reformat all source files from the root directory with:
+# clang-format -i $(find . -name '*.[ch]')
+---
 Language: Cpp
 BasedOnStyle: LLVM