text:(
  "Given$a$text$file$of$many$lines,$where$fields$within$a$line$";
  "are$delineated$by$a$single$'dollar'$character,$write$a$program";
  "that$aligns$each$column$of$fields$by$ensuring$that$words$in$each$";
  "column$are$separated$by$at$least$one$space.";
  "Further,$allow$for$each$word$in$a$column$to$be$either$left$";
  "justified,$right$justified,$or$center$justified$within$its$column." )

ta:{[aln;txt]                                                  / tabulate aligned
  sl:(count'')s:"$"vs/:txt;                                    /   strings and their lengths
  cw:{rl#\:max x@/:\:til max rl:count each x}sl;               /   cell widths
  ps:$[aln=`R;-1-cw;1+cw]$''s;                                 /   padded strings
  ps:$[aln=`C;(neg(cw-sl)div 2)rotate''ps;ps];                 /   center
  1,[;"\n\n"]"\n"sv raze each ps; }                            /   print