/* Byte swapped ? */
if (strncmp(" P A B", magic, 6) == 0) return MCGILL_FILE;
if (strncmp("Volume", magic, 6) == 0) return EDGE_FILE;
/* Byte swapped ? */
if (strncmp(" P A B", magic, 6) == 0) return MCGILL_FILE;
if (strncmp("Volume", magic, 6) == 0) return EDGE_FILE;