BOM => "Byte order mark" https://en.wikipedia.org/wiki/Byte_order_mark
In PHP e.g. you can not work with BOM files. There actually are so called "BOM checker classes" to examine files and make clear they have no BOM. You can not see the BOM when you open it with a text editor. So if you work with PHP or not explicit need a BOM always save your files without the BOM. -- <http://forum.pspad.com/read.php?2,68103,68107> PSPad freeware editor http://www.pspad.com
