About Errors, Warnings and Info

Errors means that data must have lost and the issue during conversion is badly enough to malform the output file.

Warnings means that data is going to be quite different from the input file, but the output is largely usable.

Info means some minor changes to the data that merely affects the output, but they are still needed to be reported to users.

In verbose mode, verbose info are just some additional information from the program. They are general output and won't account for data changes.