ConstReadonlyNONE: 0Text doesn't wrap around the drawing. It is drawn in front of or behind the text
ReadonlySQUARE: 1Text wraps around the drawing's box
ReadonlyTHROUGH: 4Text wraps closely around the drawing's outline, and fills any open space inside it
ReadonlyTIGHT: 2Text wraps closely around the drawing's outline
ReadonlyTOP_AND_BOTTOM: 3Text sits above and below the drawing, not beside it
Enumeration of text wrapping types for floating drawings.
Reference: http://officeopenxml.com/drwPicFloating-textWrap.php