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+afSetErrorHandler allows an alternate error handling routine to be
+specified.
+
+SYNOPSIS
+
+	#include <audiofile.h>
+
+	AFerrfunc afSetErrorHandler (AFerrfunc errorFunction);
+
+PARAMETERS
+
+errorFunction is a pointer to an error handling function which has the
+following prototype:
+	void error (long, char *, ...);
+
+RETURN VALUE
+
+The value returned from afSetErrorHandler is a pointer to the previous
+error handling function.
+
+DESCRIPTION
+
+The afSetErrorHandler() library function allows the user to override
+the default error handling function.
+
+The arguments are a long indicating an error code and a string (which
+may have printf-style formatting) followed by a variable argument list
+which contains any arguments for the format string.