anchor.diff:    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 /tmp/$file --replace
  +  sudo VBoxManage extpack install --replace /tmp/$file
   fi
   ----
   
  -* Do not forget to update VirtualBox Guest Additions on the virtual machines,
  -this may be especially important for continued X11 guest desktop support.
  += 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
   
  
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: Transferring <SUNWvbox> package instance
  ----
  
  = Updating the Extension pack
  
  After updating the host software, if you're using the PUEL-licensed extension
  pack, don't forget to update it as well. A nice automation was posted on the
  VirtualBox forums https://forums.virtualbox.org/viewtopic.php?f=7&t=44337 by
  "Sasquatch":
  