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j2x [-input filename] [-output filename] [-set tag] [-rec tag] [-nest flat|recurse|plural|depth] [-timer] [-help]

j2x reads JSON data from standard input or a specified file, transforms it to XML with optional formal changes to set and record tags, and writes the result to standard output or a specified file.

Read JSON from filename instead of standard input.
Write XML to filename instead of standard output.

Replace set wrapper tag.
Replace record wrapper tag.

Nested array naming policy.

Report processing duration and rate.

Print usage information, complete with an example pipeline.

efetch(1), nquire(1), transmute(1), xtract(1).