alias big {
  set %bl.buffer1 A | set %bl.buffer2 A | set %bl.buffer3 A | set %bl.buffer4 A | set %bl.buffer5 A
  var %bl.cmd say, %bl.col1, %bl.col2
  if ($$1 == echo) { set %bl.cmd echo -at | tokenize 32 $2- }
  if ($1 !isnum) { set %bl.col1 1 | set %bl.col2 0 }
  elseif ($2 !isnum) { set %bl.col1 $1 | set %bl.col2 0 | tokenize 32 $2- }
  else { set %bl.col1 $1 | set %bl.col2 $2 | tokenize 32 $3- }
  var %bl.idx1 1,  %bl.idx2 1,  %bl.idx3 1
  ;set the block field
  while (%bl.idx1 <= $0) {
    set %bl.idx2 1
    while (%bl.idx2 <= $len($ [ $+ [ %bl.idx1 ] ])) {
      blockappend $blockletter($mid($ [ $+ [ %bl.idx1 ] ],%bl.idx2,1))
      inc %bl.idx2
    }
    if (%bl.idx1 < $0) blockappend $blockletter
    inc %bl.idx1
  }
  ;colorize the block field
  blockcolor %bl.col1 %bl.col2
  ;output the block field
  set %bl.idx3 1
  while (%bl.idx3 <= 5) { %bl.cmd %bl.buffer [ $+ [ %bl.idx3 ] ] | unset %bl.buffer [ $+ [ %bl.idx3 ] ] | inc %bl.idx3 }
}