          !!!!!!!!!!!!!!!!! VERY, VERY IMPORTANT !!!!!!!!!!!!!!!!!!

1.   The classes in this directory are an implementation interfacing to the Unix operating system and will need to be replaced/modified for use with any other operating system.

2.   The class OS_TIMERS may be modified if desired to include more than the  group indicated in this implementation if this is provided by any particular unix implementation!

3.   The external class OS_FLOAT_MATHS contains at the end a large number of routines which a standard maths library is expected to contain for floating point number manipulations.  If any or all of these are not available then these should be commented out in that class.