How to print a model with its frame automatically?

Hello,

I would like to write a small M-file to export my huge Simulink model to a PDF file. I need to have each view (each subsystem) to be printed with a frame. I know how to do so "per hand" using the print menu and tick the frame option...

But how to do exactly the same using the print function??

What shall i add to the following command in order to print my model with its frame?

print ('-smodelname', 'filename', '-append', '-dpdf')

Many thanks !

Matthieu (Matlab Simulink r2012b)