"enscript --word-wrap" does not wrap line of text file

[powah]

I want to print a text file with line number added.
Therefore I use "enscript -C" to print.
I use "Courier8" which is the smallest font I like.
However, this command does not wrap line of text file.
i.e. some lines are chopped off at the right margin.
$ enscript -C -f "Courier8" --word-wrap xxx
[ 1 pages * 1 copy ] sent to printer

This will wrap line of text file but does not have the line number added.
$ lpr xxx

$ enscript --version
GNU enscript 1.6.1

I use FC3 linux.