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Antigravity Agent e9cbf23ab5 docs(10_Wiki): Dev 폴더 누락분 반영 — Topic_Programming으로 통합

이전 재구성 작업에서 Dev/ 폴더가 누락되었던 것을 반영.

- Dev/Topic_Programming(중첩 폴더, 78개)은 Dev 자체 최상위 폴더들
  (Architecture/Conventions/Engineering_Intelligence 등)과 완전 중복이라 제거.
- Dev 최상위 엔지니어링 지식 폴더(Architecture/Conventions/Engineering_Intelligence/
  Failure_Library/Generalized_Principles/Language/Pattern_Catalog/Platform_Guides/
  Subsystems, 77개)는 이미 Topic_Programming/Topic_Programming에 더 최신 버전이
  존재해 중복 제거(고유 콘텐츠 1개는 예외 처리하여 이동 보존).
- Dev의 W3Schools 언어 튜토리얼 폴더(Topic_C/CPP/CSS/CSharp/HOWTO/HTML/Java/
  JavaScript/PHP/Python/SQL/W3CSS, 1201개)는 전부 Topic_Programming 하위로 이동.
- 에이전트 운영 상태(.astra/docs)는 그대로 유지, 콘텐츠 폴더만 정리.
- Topic_Programming 최종 문서 수: 2784 → 3985.

2026-07-05 00:39:13 +09:00

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title

HTML Headings

🎯 한 줄 통찰 (One-line insight)

HTML headings <h1>–<h6> express the importance and structure of content (not merely its size), with <h1> most important and <h6> least. [S1]

🧠 핵심 개념 (Core concepts)

Six heading levels — <h1> through <h6>. [S1]
Importance, not size — <h1> defines the most important heading; <h6> the least important. [S1]
Browsers add margins — browsers automatically add some white space (a margin) before and after a heading. [S1]
Headings are for structure — search engines use headings to index the structure and content of web pages; users skim them to grasp a page. [S1]
Size is styled with CSS — use the style attribute with font-size to change a heading's rendered size. [S1]

🧩 추출된 패턴 (Extracted patterns)

One <h1> per page — use <h1> for the main title (or logo). [S1]
Logical hierarchy — <h1> for page title → <h2> for section titles → <h3> for subsections, in order. [S1]
Don't misuse headings for visuals — do not use headings just to make text big or bold; use CSS for that. [S1]
Resize via inline style — <h1 style="font-size:60px;">…</h1>. [S1]

📖 세부 내용 (Details)

HTML Headings HTML headings are titles or subtitles that you want to display on a webpage. They are defined with the <h1> to <h6> tags. <h1> defines the most important heading; <h6> defines the least important heading: [S1]

<h1>Heading 1</h1>
<h2>Heading 2</h2>
<h3>Heading 3</h3>
<h4>Heading 4</h4>
<h5>Heading 5</h5>
<h6>Heading 6</h6>

Note: Browsers automatically add some white space (a margin) before and after a heading. [S1]

Headings Are Important Headings are important. Search engines use the headings to index the structure and content of your web pages. Users often skim a page by its headings; it is important to use headings to show the document structure. <h1> headings should be used for main headings, followed by <h2> headings, then the less important <h3>, and so on. [S1]

Note: Use HTML headings for headings only. Don't use headings to make text BIG or bold. [S1]

Bigger Headings Each HTML heading has a default size. However, you can specify the size for any heading with the style attribute, using the CSS font-size property: [S1]

<h1 style="font-size:60px;">Heading 1</h1>

Heading reference table

Tag	Description
`<html>`	Defines the root of an HTML document
`<body>`	Defines the document's body
`<h1>` to `<h6>`	Defines HTML headings

🛠️ 적용 사례 (Applied in summary)

A typical applied structure (e.g. a travel guide) uses <h1> for the page title, <h2> for region/section titles, and <h3> for country/subsection titles — demonstrating heading hierarchy as document outline. No external project/commit applications found in the source.

💻 코드 패턴 (Code patterns)

All six heading levels (HTML):

<h1>Heading 1</h1>
<h2>Heading 2</h2>
<h3>Heading 3</h3>
<h4>Heading 4</h4>
<h5>Heading 5</h5>
<h6>Heading 6</h6>

Resizing a heading with inline CSS:

<h1 style="font-size:60px;">Heading 1</h1>

⚖️ 모순 및 업데이트 (Contradictions & updates)

The source stresses semantics over appearance: headings should encode document structure for search engines and users, not be repurposed to make text big or bold — use CSS font-size instead. [S1]

✅ 검증 상태 및 신뢰도

상태: draft
검증 단계: conceptual (실제 적용 사례 발견 시 applied/validated로 승격 가능)
출처 신뢰도: B (W3Schools — widely used educational reference, not a primary standards body)
신뢰 점수: 0.90
중복 검사 결과: 신규 생성 (New discovery)

🔗 지식 그래프 (Knowledge Graph)

상위/루트: HTML Tutorial
관련 개념: HTML Paragraphs, HTML Basic, HTML Styles, HTML Elements
참조 맥락: Referenced whenever structuring page content into titles and sections for readers and search engines.

📚 출처 (Sources)

[S1] W3Schools — HTML Headings — https://www.w3schools.com/html/html_headings.asp

📝 변경 이력 (Change history)

2026-06-23: Initial draft synthesized from the W3Schools "HTML Headings" page (Astra wiki-curation, P-Reinforce v3.1 format).

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