This file is indexed.

/usr/share/acl2-6.3/books/system/top.lisp is in acl2-books-source 6.3-5.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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; This book includes books verifying termination and guards of system
; functions.  Add an include-book for each new such book.

(in-package "ACL2")

(include-book "hl-addr-combine")
(include-book "extend-pathname")
(include-book "too-many-ifs")
(include-book "verified-termination-and-guards")
(include-book "sublis-var")
(include-book "subcor-var")
(include-book "subst-expr")
(include-book "convert-normalized-term-to-pairs")
(include-book "gather-dcls")
(include-book "meta-extract")
(include-book "legal-variablep")