SZ_MONSTERSTRUCT
fseek(Monstfp, (long) which * (long) SZ_MONSTERSTRUCT, SEEK_SET);
fread(&Curmonster, SZ_MONSTERSTRUCT, 1, Monstfp);
fseek(Monstfp, (long) which * (long) SZ_MONSTERSTRUCT, SEEK_SET);
fread(&Othermonster, SZ_MONSTERSTRUCT, 1, Monstfp);
while (fread(&Curmonster, SZ_MONSTERSTRUCT, 1, Monstfp) == 1)
fseek(Monstfp, 13L * SZ_MONSTERSTRUCT, SEEK_SET);
fread(&Curmonster, SZ_MONSTERSTRUCT, 1, Monstfp);
fseek(Monstfp, 13L * SZ_MONSTERSTRUCT, SEEK_SET);
fwrite(&Curmonster, SZ_MONSTERSTRUCT, 1, Monstfp);
fwrite(&Curmonster, SZ_MONSTERSTRUCT, 1, Monstfp);