Where ist mkisofs in FreeBSD 11 Ports?

Well, this time seems that I indeed forgot rehash. After reboot it is there. :)

But mkhybrid was there before. From where?! And there is no man page for it.
Do pkg info -l cdrecord, that will show you all the files that are installed by the package.
Heh, I always did less /usr/ports/<whatever>/<whatever>/pkg-plist. Thanks, that's easier to type. Additionally, not all ports have a pkg-plist.
Not all ports have a package plist file, some ports use an automatically generated plist.