PR...ya gotta understand..."Stocker" is from the United Kingdom where the English language began. They spell many words "funny"  E.g. Colour, favour,behavior etc. We (the USA) are the new guys on the block and have created our own version of the language they created. One of my favorite Winston Churchill quotes is : "Americans and British are one people separated only by a common language". I'm just sayin, Bill of the Board.