/usr/share/acl2-4.3/books/make-event/macros-skip-proofs.acl2 is in acl2-books-source 4.3-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 | (certify-book "macros-skip-proofs" 0 t :skip-proofs-okp t)
|