Holy cow, I wrote a book!
Some time ago, we learned the story of
that mysterious J.
There is another mystery character that sometimes shows up in place of
a smiley face: the \001.
The character starts out as the Unicode
which looks like this:
In code page 437, this character lives at position 1,
and depending on what program is being used to display the character,
it might appear as a box (representing the character U+0001)
or as the escape sequence \001.
You can think of this as a version of the mysterious J,
but taking a route through code page 437,
or you can think of it as
how a bullet turns into a beep
taken in reverse,
then reversed again.