TopMargin Element (RDL)
Specifies the width of the top margin of the report.
The string for the TopMargin element must contain a number (with a period character used as an optional decimal separator). The number must be followed by a designator for a CSS length unit such as cm, mm, in, pt, or pc. A space between the number and the designator is optional. For more information about size designators, see "CSS Length Units Reference" at msdn.microsoft.com.
The maximum value for TopMargin is 160in. The minimum value is 0in.