Specifies the padding for applying to the selected paragraphs.
property Padding: TRVRect;
This property is applied to Background.BorderOffsets property of paragraph styles (RVStyle.ParaStyles[].Background.BorderOffsets).
If Padding.Left exceeds LeftIndent property of the paragraph style, LeftIndent is increased.
If Padding.Right exceeds RightIndent property of the paragraph style, RightIndent is increased.
If Padding.Top exceeds SpaceBefore property of the paragraph style, SpaceBefore is increased.
If Padding.Bottom exceeds SpaceAfter property of the paragraph style, SpaceAfter is increased.
UsePadding property specifies which sides of padding are applied.