| Nosaukums | This part of ISO 20271 defines the individual properties that may be included within each layer of the reference model for textual documents. It also establishes classification criteria based on the functional characteristics of each layer.
A structured taxonomy defines each property within the reference model. To support its practical application, each property is also represented using an XML-based reference markup, ensuring that the relevant information is embedded directly within the document structure. This combined use of taxonomy and markup avoids reliance on proprietary parsers or rendering behaviours, and supports interpretability in the face of technical degradation or format obsolescence.
The reference markup is designed to associate relevant information with all applicable elements of a textual document, including content, layout, and metadata. By doing so, it supports consistency in document structure and interpretation.
This standard facilitates quantitative and objective evaluations of existing textual document formats against the preservation requirements outlined in ISO 20271-1. It also enables comparative assessments across different formats by using a unified reference markup.
In addition, the standard defines a structured taxonomy of properties to be applied across the layers of the reference model. To support its practical application, the standard provides guidance on how the taxonomy may be implemented, including non-prescriptive XML-based reference markups and example instance documents to illustrate potential usage.
The standard also outlines a methodology for the technical evaluation of current textual document formats, and includes checkpoints to assist in the design of new formats that are resilient to technical degradation.
This part does not define a specific file format. Rather, it focuses on ensuring that the necessary information is captured within the appropriate layer, as defined in the reference model, to avoid loss of meaning or functionality if such information is omitted.
The content and guidance provided in this part are intended to support consistent, structured approaches to the preservation and evaluation of textual documents, in accordance with the long-term preservation principles outlined in ISO 20271-2.
This part of ISO 20271-3 includes the following key specifications:
• defines a structured taxonomy of properties applicable to each layer of the reference model for textual documents, and provides classification criteria based on the functional characteristics of those layers
• illustrates how these properties may be represented through example XML-based reference markup, supporting explicit expression of content and reducing the risk of interpretability loss due to technical obsolescence or specification decay.
• includes guidelines for linking structured properties to content elements, layout information, and metadata within textual documents, enabling a coherent and comprehensive preservation structure.
• offers comparative evaluation scenarios using existing standard documents to support assessment and benchmarking of various document formats.
• provides criteria that may be used to construct checklists for designing document formats that are resilient to technical degradation and ensure consistency of element-level information, aligned with the layer-specific semantics the reference model.
This part of ISO 20271-3 does not define or mandate the following elements, which are considered out of scope for this standard:
• specific file formats for textual documents or other types of documents, such as presentation documents, spreadsheets, images, or CAD files.
• exact technical methods for verifying the existence of properties within specific textual documents.
• technical analysis methods for particular document formats, including DOC, DOCX, ODT, TXT, PDF, etc.
• metadata items specifically required for the long-term preservation of textual documents.
• any recommendations regarding specific hardware, operating systems, or software applications.
• detailed processes, procedures, or management practices related to long-term preservation and records management.
This standard outline specific guidelines for establishing properties and markup that improve the long-term interpretability of textual documents, addressing the challenges posed by potential technical obsolescence. Targeted at developers, format designers, and evaluators, it supports the development of new document formats as well as the evaluation of existing ones. The focus is on maintaining accessibility and content accuracy over extended periods. These guidelines promote a structured and objective framework for assessing the suitability of document formats for long-term preservation, helping to ensure that documents remain interpretable and usable as technologies evolve. |
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| Darbības sfēra | This part of ISO 20271 defines the individual properties that may be included within each layer of the reference model for textual documents. It also establishes classification criteria based on the functional characteristics of each layer.
A structured taxonomy defines each property within the reference model. To support its practical application, each property is also represented using an XML-based reference markup, ensuring that the relevant information is embedded directly within the document structure. This combined use of taxonomy and markup avoids reliance on proprietary parsers or rendering behaviours, and supports interpretability in the face of technical degradation or format obsolescence.
The reference markup is designed to associate relevant information with all applicable elements of a textual document, including content, layout, and metadata. By doing so, it supports consistency in document structure and interpretation.
This standard facilitates quantitative and objective evaluations of existing textual document formats against the preservation requirements outlined in ISO 20271-1. It also enables comparative assessments across different formats by using a unified reference markup.
In addition, the standard defines a structured taxonomy of properties to be applied across the layers of the reference model. To support its practical application, the standard provides guidance on how the taxonomy may be implemented, including non-prescriptive XML-based reference markups and example instance documents to illustrate potential usage.
The standard also outlines a methodology for the technical evaluation of current textual document formats, and includes checkpoints to assist in the design of new formats that are resilient to technical degradation.
This part does not define a specific file format. Rather, it focuses on ensuring that the necessary information is captured within the appropriate layer, as defined in the reference model, to avoid loss of meaning or functionality if such information is omitted.
The content and guidance provided in this part are intended to support consistent, structured approaches to the preservation and evaluation of textual documents, in accordance with the long-term preservation principles outlined in ISO 20271-2.
This part of ISO 20271-3 includes the following key specifications:
• defines a structured taxonomy of properties applicable to each layer of the reference model for textual documents, and provides classification criteria based on the functional characteristics of those layers
• illustrates how these properties may be represented through example XML-based reference markup, supporting explicit expression of content and reducing the risk of interpretability loss due to technical obsolescence or specification decay.
• includes guidelines for linking structured properties to content elements, layout information, and metadata within textual documents, enabling a coherent and comprehensive preservation structure.
• offers comparative evaluation scenarios using existing standard documents to support assessment and benchmarking of various document formats.
• provides criteria that may be used to construct checklists for designing document formats that are resilient to technical degradation and ensure consistency of element-level information, aligned with the layer-specific semantics the reference model.
This part of ISO 20271-3 does not define or mandate the following elements, which are considered out of scope for this standard:
• specific file formats for textual documents or other types of documents, such as presentation documents, spreadsheets, images, or CAD files.
• exact technical methods for verifying the existence of properties within specific textual documents.
• technical analysis methods for particular document formats, including DOC, DOCX, ODT, TXT, PDF, etc.
• metadata items specifically required for the long-term preservation of textual documents.
• any recommendations regarding specific hardware, operating systems, or software applications.
• detailed processes, procedures, or management practices related to long-term preservation and records management.
This standard outline specific guidelines for establishing properties and markup that improve the long-term interpretability of textual documents, addressing the challenges posed by potential technical obsolescence. Targeted at developers, format designers, and evaluators, it supports the development of new document formats as well as the evaluation of existing ones. The focus is on maintaining accessibility and content accuracy over extended periods. These guidelines promote a structured and objective framework for assessing the suitability of document formats for long-term preservation, helping to ensure that documents remain interpretable and usable as technologies evolve. |
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