LeftMargin Element (RDL)
Specifies the width of the left margin of the report.
The string for the LeftMargin 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 size for LeftMargin is 160 inches. The minimum size is 0 inches.