ANSI C

You may optionally make you C source code compilable with a K&R and ANSI C compiler by using the macros defined in `ansi.h'.

This is needed to support the free and open source K&R C compiler BCC on Minix 2 in addition to ANSI C compilers on Linux and NetBSD. If you do not care to support BCC then you can skip the macros and just write ANSI C as you normally would.

As an example, most of Stone Horses' text mode C programs use the macros but his graphics library does not use them because Minix 2 does not support graphics mode.