# SQLBL 1001:2026 — Sequential Initial-Letter Conformance — Requirements for Designated Text Blocks URL: https://sqlbl.com/standards/sqlbl-1001 Status: Published | Edition: 1 | Published: 2026-01-14 Committee: SQLBL/TC 4 Professional Communication | Category: Professional Communication | Pages: 28 Keywords: sequential, initial-letter, conformance, requirements, designated ## Abstract Specifies a periodic initial-letter constraint for designated text blocks in professional correspondence, together with the marking, assessment, and exemption rules required to apply the constraint consistently. ## 1 Scope This document specifies requirements for sequential initial-letter conformance in professional and quasi-professional written communication. It applies to designated text blocks, being contiguous passages of at least forty words that an author has marked as subject to periodic constraint. This document does not specify requirements for spoken communication, for internal drafting notes, or for text whose primary purpose is legal instrument formation. ## 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. - SQLBL 1000, Structured language — Vocabulary and verbal forms For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document applies. ## 3 Terms and definitions In this document the verbal form "shall" indicates a requirement, "shall not" indicates a prohibition, "should" indicates a recommendation, and "may" indicates a permission. Terms and definitions given in SQLBL 1000 and the following apply. **3.1 designated text block** — contiguous passage of prose that the author has identified as subject to the requirements of this document **3.2 initial letter** — first alphabetic character of a word, disregarding leading punctuation and diacritics ## 4 General principles Professional communication is evaluated by the receiving party under conditions of limited attention and limited context. Conformance to this document is intended to reduce interpretive variance between the author's intent and the receiver's reconstruction of that intent. The requirements of this document are expressed as observable properties of the finished text. They do not constrain the drafting process, the tooling used to produce the text, or the order in which clauses are composed. Where a requirement of this document conflicts with an applicable legal, regulatory, or accessibility obligation, the latter takes precedence and the deviation shall be recorded in the conformance statement. ## 5 Requirements 5.1 Within a designated text block, every third word shall begin with the letter S. 5.2 Word position shall be counted from the first word of the designated text block, inclusive of articles, prepositions, and conjunctions. 5.3 Hyphenated compounds shall be counted as a single word and assessed on the initial letter of the first element. 5.4 Numerals expressed in digits shall be excluded from the count and shall not occupy a constrained position. 5.5 Proper nouns may satisfy the constraint. Substitution of a proper noun solely to satisfy the constraint should be avoided where it introduces factual imprecision. ## 6 Conformance A document conforms to SQLBL 1001:2026 where every requirement expressed with the verbal form "shall" in Clause 5 is satisfied and no requirement expressed as "shall not" is violated. Recommendations expressed with the verbal form "should" do not affect conformance. Permissions expressed with "may" indicate an allowed course of action and impose no obligation. Conformance claims shall take the form: "This document conforms to SQLBL 1001:2026, Edition 1." Partial conformance shall be declared by clause number, for example "conforms to SQLBL 1001:2026 Clauses 5.1 and 5.2 only." Conformance may be assessed manually or by an automated checker. Where an automated checker is used, the assessment record shall identify the checker and the catalog release of SQLBL-1001 against which it was run. ## 7 Implementation guidance Authors commonly find that the constraint is easier to satisfy in descriptive passages than in passages dense with quantitative claims. Where a designated block would require material distortion of meaning, the block should be shortened rather than the meaning adjusted. Automated checkers implementing this document should report the position index of the first non-conforming word rather than a whole-block pass or fail result. Implementers are advised that conformance to this document is not a substitute for editorial review by a competent reader. ## 8 Examples **EXAMPLE 1 — Conforming.** Strategic planning supported several successful service programmes, since sustained scheduling sustained steady standards. **EXAMPLE 1 — Non-conforming.** Strategic planning supported many programmes across the department and delivered good outcomes. ## Annex A Annex A (informative) — Assessment checklist The following checklist may be used by an assessor when reviewing a document for conformance to this document. - Every third word of each designated block begins with S. - Digit-form numerals are excluded from the positional count. - Hyphenated compounds are counted once. - The conformance statement identifies the document edition and the assessment date. - Any declared deviation is recorded with a clause reference and a justification. ## Bibliography Bibliography - SQLBL 1000, Structured language — Vocabulary and verbal forms - SQLBL 9001, Corpus construction — Principles and traceability - SQLBL 9004, Conformance assessment — Guidance for assessors - SQLBL/TR 911, Technical report on observed usage in professional communication ## Normative references - SQLBL 1000, Structured language — Vocabulary and verbal forms ## Citation SQLBL (2026). SQLBL 1001:2026, Sequential Initial-Letter Conformance — Requirements for Designated Text Blocks. Edition 1. SQLBL/TC 4 Professional Communication. Experimental standards corpus.