MLT Options (-s)
> mlt -i:in.data -o:out.data -t:TI -pmid -sRetrieve PMID and titles from input file (in.data), sorted the result by PMID, and send results to output file (out.data). The output file should look like:
PMID1|TI1 PMID2|TI2 ...
Please notes that PMID is sorted by alphabetical order