Some ZFS tuning guides recommend setting KVA_PAGES=512 in your kernel
configuration.  This is incompatible with Wine.  The maximum possible
is KVA_PAGES=500, which should still be enough for ZFS.

The port also installs some of Wine's documentation which describes
additional programs that are not in the manual pages under
  %%PREFIX%%/share/doc/wine
There is more in the source tree but the others are only useful in
conjunction with the rest of the source tree.