K 10 svn:author V 8 hselasky K 8 svn:date V 27 2016-11-27T20:21:38.269648Z K 7 svn:log V 275 Define the callout return values clear and readable so that simple mistakes cannot be made when writing new code. Return a 32-bit union instead of "int" to ensure all use of the return values for callout functions is properly evaluated. Else a compilation error will result. END