1004: <filename(modulename)> : '<symbol>' duplicated in <filename(modulename)>
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 This message indicates that the symbol <symbol> defined as public in the
 first module is also defined as public in the second module.

 This will occur if two symbols in separate .OBJ or .LIB files have the same
 name. The first one found is the one which is linked into the program, and
 the second one is ignored.