BOM

BOM

1. Bill of Materials.

2. Byte Order Mark. A prefix to a unicode file that indicates the byte ordering of the file.

Contributed by Kenneth Nellis.

For more information see:

• http://msdn.microsoft.com/library/en-us/intl/unicode_42jv.asp 

3. Beginning of Message.

4. Beginning of Medium. The first location on the medium which can be written to or read from. In this case BOM usually refers to the sequence of characters written at the beginning of the medium to signify its start.

A tape might have a BOM, particularly if the tape has a leader before which data cannot be written..