A data structure describing how a particular paragraph's properties differ from the paragraph properties of the style assigned to the paragraph. By applying a PAPX to the paragraph properties (PAP) inherited by a particular paragraph from its style, it is possible to reconstitute the PAP for that paragraph. The PAPX contains an ISTD (a style code to identify the style in control of the paragraph and a grpprl which specifies how the style's paragraph properties must be changed to produce the paragraph properties of the paragraph.