leftMargin Property
Sets or returns a String that represents the number of pixels for the left margin of the page.
expression.leftMargin
expression Required. An expression that returns one of the objects in the Applies To list.
Example
The following example sets the bottom, top, left, and right margins to 50 pixels.
With ActiveDocument.body
.bottomMargin = "50"
.leftMargin = "50"
.rightMargin = "50"
.topMargin = "50"
End With