anchor.diff:  * Patch the newly installed `/opt/VirtualBox/vboxconfig.sh` following the
   procedure above, and run it to complete the installation:
   ----
  +:; ( cd /opt/VirtualBox/ && gpatch -p1 ) < vboxconfig.sh.patch
   :; ( cd /opt/VirtualBox/ && ./vboxconfig.sh --postinstall )
  +:; svcadm enable virtualbox/balloonctrl
  +:; svcadm enable virtualbox/zoneaccess
   ----
   
   * At this point, your update should be complete.
   
   
  -= Applying and using the patch to install VirtualBox from the package file
  +== Applying and using the patch to install VirtualBox from the package file
   
   If you like package installations to be marked clean and report no errors,
   you should patch the downloaded package to include the enhanced script.
  
positive.code: any of the OSE builds in illumos distributions.
  
  
  = Applying and using the patch to (un)install an unmodified VirtualBox package
  
  NOTE: Thanks to "russell" from the OpenIndiana mailing list for pointing
  in the right direction for this simplified procedure.
  
negative.code:   echo $file
    wget -c http://download.virtualbox.org/virtualbox/$var1/$file -O /tmp/$file
    sudo VBoxManage extpack uninstall "Oracle VM VirtualBox Extension Pack"
    sudo VBoxManage extpack install --replace /tmp/$file
  fi
  ----
  
  = Updating Guest Additions
  
  Do not forget to update VirtualBox Guest Additions on the virtual machines,
  this may be especially important for continued X11 guest desktop support,
  and you may need to reinstall the additions if your X11 server is updated.
  
  On a guest (or dualboot) Solaris/illumos installation you'd do:
  
  ----
  :; 7z x "`ls -1 VBoxGuestAdditions*.iso | tail -1`" VBoxSolarisAdditions.pkg && \
     yes | pkgrm SUNWvboxguest && \
     yes '' | pkgadd -d VBoxSolarisAdditions.pkg all
  ----
  
  You'd likely have to reboot the guest to take advantage of the new
  `vboxguest` versions.
  
  = X.Org config file chooser for dual-booted VM/HW setups
  
  