Converting multiple panels

The source-filespec can be a special file which is a list of other files to be converted. When you use this option, you can convert multiple panels with a single call to the conversion utility. The format of the file list is:
DTLLST source-filespec 1
DTLLST source-filespec 2
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The format of source-filespec is the same as any other call to the conversion utility. Duplicate source-filespec names within DTLLST are ignored.