@section @code{vdprintf}
@findex vdprintf
-POSIX specification: @url{http://www.opengroup.org/onlinepubs/9699919799/functions/vdprintf.html}
+POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/vdprintf.html}
Gnulib module: vdprintf or vdprintf-posix