Isn't. That is: the function is provided in rts-file.c (_p_getfile), but it's not supported by the compiler. How do I go about adding this (or others) function? I'ld rather get instructions on how to do it myself rather than a patch (though I can study the patch) so I can learn how do to it to add more functions later on (such as Lo, Hi etc). TIA Bill -- Leave others their otherness.