+
+$ mlr --usage-data-format-options
+ --idkvp --odkvp --dkvp Delimited key-value pairs, e.g "a=1,b=2"
+ (this is Miller's default format).
+
+ --inidx --onidx --nidx Implicitly-integer-indexed fields
+ (Unix-toolkit style).
+
+ --icsv --ocsv --csv Comma-separated value (or tab-separated
+ with --fs tab, etc.)
+
+ --itsv --otsv --tsv Keystroke-savers for "--icsv --ifs tab",
+ "--ocsv --ofs tab", "--csv --fs tab".
+
+ --ipprint --opprint --pprint Pretty-printed tabular (produces no
+ output until all input is in).
+ --right Right-justifies all fields for PPRINT output.
+ --barred Prints a border around PPRINT output
+ (only available for output).
+
+ --omd Markdown-tabular (only available for output).
+
+ --ixtab --oxtab --xtab Pretty-printed vertical-tabular.
+ --xvright Right-justifies values for XTAB format.
+
+ --ijson --ojson --json JSON tabular: sequence or list of one-level
+ maps: {...}{...} or [{...},{...}].
+ --jvstack Put one key-value pair per line for JSON
+ output.
+ --jlistwrap Wrap JSON output in outermost [ ].
+ --jquoteall Quote map keys in JSON output, even if they're
+ numeric.
+ --jflatsep {string} Separator for flattening multi-level JSON keys,
+ e.g. '{"a":{"b":3}}' becomes a:b => 3 for
+ non-JSON formats. Defaults to :.
+
+ -p is a keystroke-saver for --nidx --fs space --repifs
+
+ Examples: --csv for CSV-formatted input and output; --idkvp --opprint for
+ DKVP-formatted input and pretty-printed output.
+
+ PLEASE USE "mlr --csv --rs lf" FOR NATIVE UN*X (LINEFEED-TERMINATED) CSV FILES.
+ You can also have MLR_CSV_DEFAULT_RS=lf in your shell environment, e.g.
+ "export MLR_CSV_DEFAULT_RS=lf" or "setenv MLR_CSV_DEFAULT_RS lf" depending on
+ which shell you use.
+
+As keystroke-savers for format-conversion you may use the following:
+ --c2t --c2d --c2n --c2j --c2x --c2p --c2m
+ --t2c --t2d --t2n --t2j --t2x --t2p --t2m
+ --d2c --d2t --d2n --d2j --d2x --d2p --d2m
+ --n2c --n2t --n2d --n2j --n2x --n2p --n2m
+ --j2c --j2t --j2d --j2n --j2x --j2p --j2m
+ --x2c --x2t --x2d --x2n --x2j --x2p --x2m
+ --p2c --p2t --p2d --p2n --p2j --p2x --p2m
+The letters c t d n j x p m refer to formats CSV with LF, TSV with LF, DKVP,
+NIDX, JSON, XTAB, PPRINT, and markdown, respectively. Note that markdown format
+is available for output only.
+
+
As of Miller 4.3.0, markdown format is supported only for output, not input.
+
+