Evaluated set s [2dsize [ascii weed]]; set out ""; set y 0; foreach line [split [ascii weed] \n] { for {set x 0} {$x < [lindex $s 1]} {incr x} { set a [cgetchar [ascii2map [ascii weed]] $x $y]; append out "[lindex $a 0]" }; append out \n; incr y };. $out