Want to find MKJA from your own pages? Here's the code! <A HREF="http://www.mkja.com/jargon_file/">The Jargon File</A> - Link direct to The Jargon File Home Page at MKJA.COM!
A single-sided floppy disk altered for double-sided use by addition
of a second write-notch, so called because it must be flipped over for the
second side to be accessible. No longer common.