Paceship Operator N.
The Glyph <=>, So-called
Apparently Because In The Low-resolution Constant-width Font Used
On Many Terminals It Vaguely Resembles A Flying Saucer.
The glyph <=>, so-called
apparently because in the low-resolution constant-width font used
on many terminals it vaguely resembles a flying saucer. Perl
uses this to denote the signum-of-difference operation.