Micro soft supports several methods of storing "text" files:
Encoding
"magic number"
hex dump of file containing text characters "0123"
ANSI
none
3031 3233
Unicode
FFFE
3000 3100 3200 3300
Unicode big endian
FEFF
0030 0031 0032 0033
UTF-8
EFBB BF
3031 3233