Internal Program Version: Term::ReadKey  2.38.5.42.0

This module, ReadKey, provides ioctl control for 
terminals and Win32 consoles so the input modes
can be changed (thus allowing reads of a single
character at a time), and also provides non-blocking
reads of stdin, as well as several other terminal
related features, including retrieval/modification
of the screen size, and retrieval/modification of 
the control characters.

http://search.cpan.org/dist/Term-ReadKey