Indicates whether the text is written horizontally or vertically.
|Data type and length||String|
|Cardinality||0-1: Optional element that can occur once or not at all|
The WritingMode element must contain an expression that evaluates to one of the values listed in the following table.
|lr-tb||Text is written horizontally.|
|tb-rl||Text is written vertically.|
WritingMode applies only to the items text box, subtotal, title, and legend. WritingMode does not apply to the items line, rectangle, image, subreport, list, table, matrix, chart, and body.