/etc/pnm2ppa.conf =>        |    version 0   | version 710,712,720,722,820,1000 | version <unknown>
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no -v                       | empty ppa file | ppa output for 7xx*, 820 or 1000 |   no ppa file
-v 710,712,720,722,820,1000 |        ppa output for 7xx*, 820 or 1000           |   no ppa file