^{<- Charles F. Goldfarb ->} The HyTime Technical Corrigendum - Part II

(C)Copyright 1996 Charles F. Goldfarb. All rights reserved.

Structure of Corrected Standard: HyTime Architecture

• Base module
  • Hyperdocument structure
  • ^{<- Attribute ->} Common attributes
• Location addressing (includes groves)
• ^{<- Hyperlink ->} Hyperlinking (includes nlink)
• ^Scheduling Scheduling (includes measurement)
• Rendition

^{<- SGML Extended Facilities ->} Structure of Corrected Standard: SGML Extended Facilities Annex

• Introduction
  • Coordinate addressing
  • Conformance
• ^{<- Grove -> Propset DTD} Property Set Definition Requirements
  • Propset DTD
  • Useful property sets (e.g., datatok)
  • Grove construction
  • Canonical grove representation
• Architectural Form Definition Requirements (AFDR)
• General Architecture
• ^{<- FSI ->} Formal System Identifier Definition Requirements (FSIDR)
• SGML Property Set (extended)

Structure of Corrected Standard: Other Annexes

• HyTime Property Set
• Measurement Domains
• Bibliography

^{<- Property Set ->} Property Set Definition Requirements (PSDR)

• Classes and properties recognized by a parsing process
  • SGML is one such process
  • HyTime datatok is another
• SGML classes include elements, attributes, data characters
• Properties of SGML elements include element type, markup, etc.
• ^{<- Property ->} Property set definition document

^{<- Grove ->} Graph Representation Of property ValuEs (GROVE)

• Structure created by a parsing process
  • Graph nodes are instances of classes
  • Graph arcs are properties of nodes
• ^{<- Grove Plan ->} "Grove plan" determines which classes and properties are included
• Grove contains multiple connected trees
• ^{<- Hypergrove ->} Groves linked to form hypergroves
• ^{<- DSSSL ->} HyTime and DSSSL address the grove structure

^{<- SGML Extended Facilities ->} General Architecture

• Extensions to SGML semantics
• Basic lexical types (lextype, HyLex)
• Default value lists for implied attributes
• Modular conformance: use any or all

^{<- Property Set -> <- SGML Property Set ->} SGML Property Set

• Everything recognized by SGML parsers
• Highly modular
  • Abstract SGML document
  • SGML document string
  • Optional SGML features
  • General Architecture extensions
  • HyTime extensions
• Standardized names for use by queries, APIs.

^FSI Formal System Identifier Definition Requirements (FSIDR)

• Coexists with informal system IDs
• FSI definition document describes all system storage facilities
• Multiple storage managers permitted
  • Local:osfile, osfd
  • Portable: url, neutral, mimetype
  • Global: literal, ThisOne
  • Container: sbento, tar, mime

^{<- HyTime Technical Corrigendum ->} IMPACT OF HYTIME Technical Corrigendum

• ^{<- Extended Facilities -> <- SGML Extended Facilities ->} SGML Extended Facilities provide major enhancements, such as
  • Lexical typing enhances control over attribute values and data, >= data base definitions
  • ^{<- FSI ->} FSIs allow network awareness with no change to document instances (SP EM already runs!)
• ^{<- DSSSL -> SDQL} DSSSL and HyTime have common SDQL query language, SGML property set, and addressing model.
• SGML revision will incorporate SGML Extended Facilities