For word wrapping purposes, the definition of a word is slightly different from that given above. For this purpose, blanks, tabs, linefeeds and carriage returns are considered `whitespace'. Then a word is considered to be any string delimited by but not containing any `whitespace' characters. These are referred to as words of type 3. The Fortran word wrap will only look for such a `whitespace' separator in the columns 63-72 as Fortran is a language that doesn't require whitespace in its statements.