NNANSI.COM (version 5/93) is an improved version of NANSI.SYS
(version 2.2), by Daniel Kegel, which is in turn such an improvement
over ANSI.SYS that *no one* should be without one of these.

If you are using ANSI.SYS, be aware that either of these drivers
will offer greatly improved performance and functionality over
your current driver. Current users of NANSI.SYS with EGA or VGA
displays (and other enhanced ANSI.SYS drivers) will notice still
greater performance and functionality in NNANSI.SYS.

Even if you don't use an ANSI.SYS driver, you will achieve major
performance benefits. (Note that there will be no performance
benefits for programs that write directly to the display).