nightly freebsd-packages - how to use

[Schlummi]

I've downloaded rc4 and the latest nightly build and compaired the FreeBSD docfile freebsd-packages.
Can anybody tell me how to interpret these x,+,-,o

Code:

Apache 2.2.x        Web System
    x threads    option
    x mysql        option
    x suexec    ( Recomended )
    + mod_cband    for bandwitdh management
    o mod_php    WARNING: security risk for hosting
    + mod_fastcgi    ( Recomended )
    + mod_proxy    Req for awstats
Proftpd            FTP System
    x IPV6        IP v6 support ( but disable by ispcp )
    x mysql        Database module
    x quota        quota module
    x ratio        ratio module
    x ctrls        control module
    - delay        Not Available in ports
    - ctrls_admin    Not Available in ports