Horizontal margin of an object. The left and right margins of the object, expressed in twips.
A number (longint)
Indicates the width of the interior unusable space from the left and right edges of the rectangle occupied by the object. For DisplayForms objects, this refers to the form object identified by the DisplayForms entry.
WdgHMargin is set to 0 if both HMargin (character columns) and WdgHMargin (twips) are $Null.
HMargin, VMargin, WdgVMargin