[CentOS] Reset booleans to default value ?

Hi,

Here's a list of all the booleans I tweaked on my server running CentOS 7:

$ sudo cat /etc/selinux/targeted/active/booleans.local # This file is auto-generated by libsemanage # Do not edit directly.

named_write_master_zones=0 httpd_can_sendmail=1 httpd_unified=1 ftpd_full_access=1 httpd_can_network_connect=1 spamd_enable_home_dirs=1

How can I "reset" (in a manner of speaking) these booleans to their default value post-install?

Ideally, the booleans.local file should be empty, but since it's auto-generated, there's not much sense in simply erasing it.

Curiously enough, I didn't find any information about this.

Cheers,

Niki