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Exception Expressions in a Logical Document Structure

IP.com Disclosure Number: IPCOM000038138D
Original Publication Date: 1989-Nov-01
Included in the Prior Art Database: 2005-Jan-31
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Barker, BA: AUTHOR [+3]

Abstract

A document's logical structure specification defines the hierarchical relationships for all possible elements that might appear in a given instance of a revisable document data stream. A simple means is provided to identify those elements that are either permitted or not permitted to occur within the content of selected logical elements. This eliminates the need to define/interpret replicated elements that are dependent on the element context hierarchy.

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Exception Expressions in a Logical Document Structure

A document's logical structure specification defines the hierarchical relationships for all possible elements that might appear in a given instance of a revisable document data stream. A simple means is provided to identify those elements that are either permitted or not permitted to occur within the content of selected logical elements. This eliminates the need to define/interpret replicated elements that are dependent on the element context hierarchy.

An EXCEPTIONS Expression is defined such that elements contained within it are either included or excluded from occurring anywhere within the logical element possessing an EXCEPTIONS Expression name reference. Within such an expression, multiple "related" logical elements can be defined so that the interpretation can result in the inclusion/exclusion of a list of related elements. For example, exclude either element A, or elements C and D and E, etc., from the content of logical element X. The interpretation of an EXCEPTIONS Expression is dependent on the type of name reference to the expression (i.e., inclusion, exclusion, or expression content dependent). Thus, in one instance of a given EXCEPTIONS Expression reference it can be defined to be "inclusion", whereas in another instance of reference it could be "exclusion". This feature additionally contributes to the minimization of a document's logical structure specifications by eliminating redundant definitio...