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auto-ingest: ietf-elements backfill — 221 new elements (2026-05-24)
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‎corpus/elements/rfc-2301__design-rationale-compression-parameters-are-stored-in-the-compressed-data.yaml‎

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document: rfc-2301
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kind: design-rationale
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summary: Compression parameters are stored in the compressed data stream rather than in TIFF fields, making the container format and the compression format specification independent of each other. This design allows TIFF to gracefully add new compression schemes as they become available.
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section: 2.1.2
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extracted_by: claude-sonnet-4-6
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extracted_at: "2026-05-24"

‎corpus/elements/rfc-2301__design-rationale-fillorder-2-lsb-first-dominates-in-fax-implementations.yaml‎

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document: rfc-2301
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kind: design-rationale
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summary: FillOrder=2 (LSB-first) dominates in fax implementations because facsimile data appears on the telephone line in bit-reversed order relative to its ITU-T T.4 description, making LSB-first the natural storage order for devices that store data directly from the modem.
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section: 2.2.2
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extracted_by: claude-sonnet-4-6
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extracted_at: "2026-05-24"

‎corpus/elements/rfc-2301__design-rationale-profile-s-mandates-little-endian-byte-order-and.yaml‎

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document: rfc-2301
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kind: design-rationale
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summary: Profile S mandates little-endian byte order and strict IFD-before-image-data page ordering to enable streaming implementations (processing a file as it is received before the entire file arrives) and to reduce memory requirements in low-resource fax devices.
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section: "3.5"
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extracted_by: claude-sonnet-4-6
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extracted_at: "2026-05-24"

‎corpus/elements/rfc-2301__design-rationale-tiff-f-uses-compression-3-rather-than-compression.yaml‎

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document: rfc-2301
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kind: design-rationale
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summary: TIFF-F uses Compression=3 rather than Compression=2 for Modified Huffman encoding because T.4-compatible fax data requires EOL codes in the stream, whereas TIFF's Compression=2 (also MH) stores data without EOLs.
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section: 4.4.4
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extracted_by: claude-sonnet-4-6
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extracted_at: "2026-05-24"

‎corpus/elements/rfc-2301__design-rationale-tiff-was-chosen-as-the-base-format-for.yaml‎

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document: rfc-2301
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kind: design-rationale
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summary: TIFF was chosen as the base format for Internet fax because it bridges legacy fax machines and host-based applications, builds on an established user and implementor base, and ensures backward compatibility with existing TIFF-based IETF proposals. TIFF constructs for pages, images, and strips also preserve the fax data stream structure.
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section: "1.2"
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extracted_by: claude-sonnet-4-6
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extracted_at: "2026-05-24"

‎corpus/elements/rfc-2301__interoperability-note-baseline-tiff-readers-are-only-required-to-support.yaml‎

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document: rfc-2301
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kind: interoperability-note
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summary: Baseline TIFF readers are only required to support FillOrder=1 (MSB-first), but because most fax products use FillOrder=2 (LSB-first), Profile S mandates FillOrder=2 for the minimal mode while Profile F requires readers to support both values.
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section: 3.2.1
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extracted_by: claude-sonnet-4-6
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extracted_at: "2026-05-24"

‎corpus/elements/rfc-2301__interoperability-note-per-itu-t-t-4-the-following-resolution.yaml‎

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document: rfc-2301
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kind: interoperability-note
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summary: 'Per ITU-T T.4, the following resolution values may be treated as equivalent: XResolution 200↔204 and 400↔408 pixels/inch; YResolution 98↔100, 196↔200, and 391↔400 pixels/inch. These equivalencies exist to permit conversions between inch-based and metric-based fax terminals.'
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section: 2.2.2
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extracted_by: claude-sonnet-4-6
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extracted_at: "2026-05-24"

‎corpus/elements/rfc-2301__interoperability-note-when-an-attribute-is-specified-both-in-the.yaml‎

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document: rfc-2301
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kind: interoperability-note
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summary: When an attribute is specified both in the compressed data stream and in a TIFF field, the data stream value takes precedence for values required to interpret the stream. TIFF field values take precedence for informational attributes not required for decoding (e.g., author name).
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section: 2.1.2
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extracted_by: claude-sonnet-4-6
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extracted_at: "2026-05-24"

‎corpus/elements/rfc-2301__normative-requirement-all-color-implementations-of-tiff-for-facsimile-must.yaml‎

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document: rfc-2301
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kind: normative-requirement
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summary: All color implementations of TIFF for facsimile MUST implement Profile C (lossy color and grayscale using JPEG compression). Profile C is the required baseline for all color-capable implementations.
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section: "1"
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rfc2119_level: MUST
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extracted_by: claude-sonnet-4-6
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extracted_at: "2026-05-24"

‎corpus/elements/rfc-2301__normative-requirement-all-implementations-of-tiff-for-facsimile-must-implement.yaml‎

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document: rfc-2301
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kind: normative-requirement
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summary: All implementations of TIFF for facsimile MUST implement Profile S (minimal black-and-white mode using MH compression). Profile S is the required baseline and root node for all conformant TIFF-FX implementations.
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section: "1"
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rfc2119_level: MUST
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extracted_by: claude-sonnet-4-6
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extracted_at: "2026-05-24"

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