2.2.6.2 Differential Formatting (DXFs)

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Like XFs (section 2.2.6.1), DXFs define a set of formatting properties. Unlike XFs (section 2.2.6.1), DXFs can define any number of formatting properties, from just one to all of them.

DXFs provide a way for features to reference a set of formatting properties. How those properties are used depends on the feature. The subsections that follow describe each of these features and how they use DXFs.

DXFs can be specified in several different ways. The following records and structures specify a DXF:

DXF records (section 2.4.97) are saved into a collection as specified by Globals Substream ABNF and referenced with a DXFId (section 2.5.94).

The remaining structures are saved within containing records, such as CF (section 2.4.42) and SxDXF (section 2.4.280). DXFN12 (section 2.5.96), DXFN12List (section 2.5.97), and DXFN12NoCB (section 2.5.98) are extensions of the DXFN structure (section 2.5.95).