Using $lf adds a chr13 even tho it's not asked for...

• //write -n asdf $+(asdf,$lf) | bread asdf 0 10 &a | echo -ag $bvar(&a,1-) | .remove asdf
  97 115 100 102 13 10

Using $crlf add TWO chr13's

• //write -n asdf $+(asdf,$crlf) | bread asdf 0 10 &a | echo -ag $bvar(&a,1-) | .remove asdf
  97 115 100 102 13 13 10

The $lf is automatically expanded to $crlf by the underlying Windows command that is being used. If you want complete control over $lf and $cr you would need to use binary files instead.

Oh well...life wasn't meant to be easy.