Thank you for this simple yet superbly helpful example.
Having finally identified and installed apparently all of the packages dependencies and then combined with this excellent example of yours, I think that it alone has saved me a significant amount of tinkering. This probably has me 50% of the way to the basic conversion task which I had pending.

If I may make an assumption from the nickname above :

1. Muito, muito obrigado. Voce nem pode imaginar a enorme ajuda que me acaba de dar aqui.
   or alternatively
2. "Muchas gracias" ?
   failing either of the above being applicable
3. Thanks a million :)