cmd,conds,short,long,params,dirs,pri,desc
abook, $convert, ,informat, , ,107,Input file format
abook, $convert, ,outformat, , ,108,Output file format
abook, $convert, ,infile, ,@r,109,Input file (default: stdin)
abook, $convert, ,outfile, ,@r,110,Output file (default: stdout)