Overview
ISO 6861:1996 - "Information and documentation - Glagolitic alphabet coded character set for bibliographic information interchange" defines a standardized coded character set for the Glagolitic alphabet intended for bibliographic exchange of Old Slavonic materials. The standard provides code tables and a combined legend that map each Glagolitic graphic character to its Cyrillic equivalent, table position, name and usage notes, enabling consistent encoding and interchange in bibliographic systems.
Key topics and technical requirements
- Coded character sets (GO and Gl): The standard supplies a basic set (GO) and an extension set (Gl) in accordance with ISO/IEC 2022 structure. The two sets together compile 90 Glagolitic letters (53 in GO, 37 in Gl) with lower‑ and upper‑case forms.
- Code tables and legend: Tables show each Glagolitic glyph, its Cyrillic counterpart, numeric/positional code in the table, official name and comments on usage or variants.
- Compatibility and mapping: Letter coding is aligned with corresponding Cyrillic coded character sets (register entries referenced) so equivalent Cyrillic letters are coded identically where applicable.
- Implementation notes: Use follows ISO/IEC 2022 extension techniques and escape sequence identification; unassigned positions in the tables are not to be used for international interchange. Rendering examples are illustrative - intended to uniquely identify characters rather than prescribe calligraphic style.
- Case and legacy considerations: Lower/upper case mapping follows GOST 13052-74 and ISO 5427 conventions and differs from ISO/IEC 646 conventions. Annexes provide informative guidance on character usage and implementation considerations.
Applications and intended users
ISO 6861 is practical for:
- Libraries, cataloguers and bibliographic agencies standardizing metadata for Old Slavonic and historical Slavic holdings.
- Digital humanities and archival projects that digitize, encode or preserve Glagolitic manuscripts and printed works.
- Software developers and metadata engineers implementing bibliographic exchange formats, character encodings or conversion utilities that must support Glagolitic ↔ Cyrillic mapping.
- Font designers and typesetting vendors producing Glagolitic glyphs for bibliographic rendering where codepoint assignments matter for interchange.
- Standards bodies and registries maintaining consistent character set registrations for international exchange.
Practical benefits include improved interoperability of bibliographic records, reliable preservation of Old Slavonic text encodings, and consistent mappings between Glagolitic and Cyrillic representations.
Related standards and references
- ISO/IEC 2022 - character code structure and extension techniques (normative reference for escape sequences and set structure).
- ISO 5427 and GOST 13052-74 - referenced for Cyrillic equivalence and case coding conventions.
- ISO International Register entries cited for related Cyrillic coded sets (for cross‑reference in bibliographic interchange).