SEO Expert Copywriter. Educational, informative, trustworthy. Certidão de ITR: O que é e para que serve? (Must be reformulated into a question or useful statement for Title/H1). A long list of questions and terms (ITR, NIRF, calculations, deadlines, etc.). Title and H1 must be identical and a question/statement. No fluff in the first paragraph (Gold Paragraph). Pure HTML (h1, h2, h3, p, ul, li, ol, a, strong, em, table). No markdown. Max 3 `[box]` placeholders, placed after complete elements (not after titles). Mention "Sistema Federal" for certificates; link to specific ITR product. Min 800 words, Brazilian Portuguese (pt-BR), short paragraphs. JSON object with `title`, `description`, `tags`, `content`, `schema_markup` (FAQPage and HowTo). * *Primary Keyword:* Certidão de ITR: O que é e para que serve? * *User Intent:* Information on what the ITR certificate is, its purpose, how to get it, and related tax obligations for rural property owners. * *Title/H1 Idea:* "O que é a Certidão de ITR e para que ela serve?" or "Como emitir a certidão de ITR e para que ela serve?" * *Selected Title/H1:* O que é a Certidão de ITR e para que ela serve? * *Gold Paragraph:* Directly define the ITR Certificate. * *Section 1: What is ITR?* Explain the tax, the Federal Revenue's role, and the difference from IPTU. * *Section 2: What is the ITR Certificate and its purpose?* Focus on the "Certidão Negativa". * *Section 3: NIRF.* Explain the number. * *Section 4: How to issue/get it?* Mention Sistema Federal. * *Section 5: Obligations, deadlines, and calculations.* * *Section 6: Late payments/consultation.* * *Section 7: Costs and free options.* * *Check:* Did I use ``? Yes. * *Check:* Did I use `