[PD] New -batch command line option in version 0.42

[Lorenzo]

I've read in Miller Puckette's paper 
http://puredata.info/community/projects/convention09/puckette.pdf/at_download/file:
"As of Pd 0.42, the “-batch” flag is available in Pd to allow a single Pd 
process to run without audio input or output. This can be useful for
writing shell-based scripts that process soundfiles through Pd patches."

This seems indeed very interesting, and opening new unexpected 
perspectives for pd. Is there any further 
documentation/discussion/example? I only found a brief description in 
x5.htm in the documentarion.

Thanks,
Lorenzo.