void * fslx_do( char *title, char *path, WORD pathlen, char *fname,
int fnamelen, char *patterns, XFSL_FILTER *filter,
char *paths, int *sort_mode, int flags,
int *button, int *nfiles, char **pattern );
NOTES
This function is available when the bit AES4_FSLX of
app.aes4 is set to one. If possible, FselInput() uses this
function to call the file selector.