Here are a few options for the description of the WordPress post_tag “證明文件 (zhèngmíng wénjiàn)” in Traditional Chinese, catering to different contexts:

**Option 1: General & Concise**

* **Description:** 涵蓋所有需要驗證或確認的官方文件，例如身份證明、學歷證明、居住證明等。
* **Translation:** Covers all official documents needed for verification or confirmation, such as identity documents, educational certificates, proof of residence, etc.

**Option 2: Emphasizing a Specific Purpose (e.g., Blog about Documents)**

* **Description:** 本標籤下的文章集中探討各種證明文件的使用、申請流程、常見問題，以及重要性。 適合準備文件或遇到文件問題的讀者參考。
* **Translation:** Articles under this tag focus on the usage, application process, common questions, and importance of various proof documents. Useful for readers preparing documents or encountering document-related issues.

**Option 3: More Formal (Suitable for a Website about Legal Affairs)**

* **Description:** 用於標記涉及正式文件的文章，這些文件旨在證明事實、權利、或義務，並可能在法律程序中使用。
* **Translation:** Used to tag articles related to formal documents designed to prove facts, rights, or obligations, and which may be used in legal proceedings.

**Option 4: Simple & Direct**

* **Description:** 與證明文件相關的所有資訊。
* **Translation:** All information related to proof documents.

**Choosing the Best Option:**

Consider these factors when choosing:

* **Your website’s topic:** Tailor the description to your website’s content.
* **Your target audience:** Use language your audience understands.
* **Purpose of the tag:** Is it for organizational purposes only, or to help readers understand the content?

In most cases, **Option 1 or Option 4** would be a good starting point. You can always edit the description later if needed.