Max Taylor wrote: > Off subject wish list. > Floating point constants. Not off topic. The required declaration in FB5 is a little verbose. BeginCFunction const double kMyDoubleConstant = 1.23456; EndC BeginCDeclaration extern const double kMyDoubleConstant; EndC system double kMyDoubleConstant You can now use kMyDoubleConstant anywhere an f.p. literal could occur. The compiler won't let you change the value. _2_test.c:42:21: fatal error: read-only variable is not assignable kMyDoubleConstant = (double)0; ~~~~~~~~~~~~~~~~~ ^ Unlike ordinary global variables, constants rarely complicate your code by posing subtle logic puzzles. When you see one, you *know* it's immutable. A simpler-seeming definition makes gMyDoubleConstant 'read-only' by agreement, enforced by programmer discipline but not by the compiler. dim as double gMyDoubleConstant : gMyDoubleConstant = 1.23456 Robert P.