Chapter 15 · 15.12
Perl Modules and EN-ClamAV
Under System Info & Files and Extra Features you'll find two more sections that you'll rarely need.
Perl Modules
Perl Modules shows a list of all Perl modules installed on the server. Perl is a programming language that used to be widely used for scripts in the cgi-bin folder. If you're using an old Perl script that requires a particular module, you can check here whether it's available.

You can only view this list here. You can't install or remove modules yourself. Missing a module you need? Then open a ticket.
EN-ClamAV
EN-ClamAV is an older plugin for scanning files with the ClamAV virus scanner. At the moment, the plugin doesn't work: if you open it, you'll see an error message about the ionCube PHP Loader.

You don't need EN-ClamAV anyway: Imunify360 already scans your package automatically for malware and checks every new file (see Imunify360: scanning your website for malware). So use Imunify360 instead.
Tip: The error message relates to the server, not to your own website. You don't need to enable anything in Select PHP version to fix it.
