You may find these links helpful for understanding what people expect ‘portable’ to mean in a computer context:
http://en.wikipedia.org/wiki/Software_portability
http://www.faqs.org/docs/artu/portabilitychapter.html
http://en.wikipedia.org/wiki/Open_format
http://en.wikipedia.org/wiki/DataPortability
You may find these links helpful for understanding what people expect ‘portable’ to mean in a computer context:
http://en.wikipedia.org/wiki/Software_portability
http://www.faqs.org/docs/artu/portabilitychapter.html
http://en.wikipedia.org/wiki/Open_format
http://en.wikipedia.org/wiki/DataPortability