I haven't tried this lately, but you get a compiler error if you include <windows.h> and use 'near' and 'far' as variables names (which are holdovers when 'near' and 'far' were keywords for ptrs that supported segmented memory flavors).

A lot of old OpenGL code and uses 'hither' and 'yon' for the near and far clipping plane for this reason. :)