Add more warinings highlights

Signed-off-by: Zlatozar Zhelyazkov <zlatozar@gmail.com>
Taken from https://github.com/oubiwann/cl-paip and formatted

Signed-off-by: Zlatozar Zhelyazkov <zlatozar@gmail.com>
Add a note

Signed-off-by: Zlatozar Zhelyazkov <zlatozar@gmail.com>