On Tue, 26 May 1998 10:06:34 -0400, Ken Hornstein
<kenh@cmf.nrl.navy.mil> wrote:

>value of 0x00 means "don't escape any characters".
>
>As for why you would need this option at all ... I'm not quite sure,
>actually.  I believe that if this isn't specified at all, you don't
>negotiate an asyncmap and both sides are expected to escape all
>characters.

In my experience, that's correct, and you will take a throughput hit
when transferring binary files, because for every one of those bytes
you will send two instead of one.