C Annex C. (informative) Additional Syntax Constraints

This clause is informative.

Although the set of normative XML Schemas included in the accompanying file named OfficeOpenXML- XMLSchema.zip (discussed in Annex A) specifies a majority of the requirements needed to ensure document conformance, there also exists a set of constraints that cannot easily be expressed in the XML Schema syntax (otherwise referred to as additional syntax constraints). These additional constraints are specified in the normative content of this Part of ISO/IEC 29500, and are included in the requirements for document conformance.

The following is a sample of such constraints specified in this Part of ISO/IEC 29500:

Subclause

Constraint

WordprocessingML Paragraphs

The caps element shall not be present with the smallCaps element on the same run, since they are mutually exclusive in terms of appearance.

WordprocessingML Headers and Footers

If the relationship type of the relationship specified by this element shall be present, have a TargetMode attribute value of Internal, and a Type attribute value of http://purl.oclc.org/ooxml/officeDocument/relationships/header.

WordprocessingML Annotations

Each “cross-structure” annotation shall have a start element whose id attribute value matches the id attribute value of the corresponding end element.

SpreadsheetML Formulas

The syntax of the value of a formula shall conform to the structure of a formula as defined in the Formulas subclause.

SpreadsheetML Styles

The xfId attribute on the cellStyles element shall specify an xf record which is present in the cellStyleXfs collection.

PresentationML Slides

Each sldId attribute in a sldLst shall have a unique value for its id attribute (within the scope of the collection).

PresentationML Slides

A customShow element specifies a range of slides (a start and end slide) in PresentationML to define the set of slides that define a slide show. There shall be slides in the presentation that have slide IDs referenced in these attributes and the start slide shall be before the end slide.

DrawingML Main The id attribute on the stCxn and endCxn elements specifies the start and end shapes to be connected. Shapes with matching id attribute values shall exist elsewhere in the spTree. End of informative text.