It  gets  a text already wrapped on the desired number of columns
and  add  extra  white  spaces, from left to right, word by word,
to  justify  all  the  lines.  There  is a maximum of 5 spaces to
be inserted between the words. If this limit is reached, the line
is  not  justified  (come  on,  more  than  5 is horrible). Empty
lines  are  ignored.  BTW,  this  comments  were  justified  with
this script &:)
