如何在多记录人员数据中标记缺失特定类型的人员ID

Hey there, here's a polished, example-rich breakdown of those Markdown formatting rules—perfect for quick reference:

Each rule below includes a clear explanation and practical example to make implementation straightforward:

• Headings: Use number signs (#) at the start of a line. The number of #s corresponds to the heading hierarchy:

  • # Main Heading → # Main Heading
  • ## Subheading → ## Subheading
  • ### Smaller Subheading → ### Smaller Subheading

• List Items: Start each entry with a dash (-). Indent dashes to create nested lists:

  • Top-level list item
    • Nested list item 1
    • Nested list item 2

• Emphasized Text: Wrap text with asterisks to add visual emphasis:

  • Italicize text: *this text is italicized* → this text is italicized
  • Bold text: **this text is bolded** → this text is bolded

• Code & Commands: Use backticks (`) to distinguish code from regular text:

  • Inline code snippets: git commit -m "Initial commit"
  • Multi-line code blocks (use three backticks):

    def calculate_area(radius):
        return 3.14159 * radius ** 2
    

• Quoted Text: Prefix lines with a greater-than sign (>) to create blockquotes:

  This is a blockquote.
  It can extend across multiple lines without breaking the quoted format.

• Links: Structure links as [display text](URL) where the display text is what readers see:

  • [Stack Overflow](https://stackoverflow.com) → Stack Overflow

• Images: Use ![alt text](image URL) to embed images. The alt text describes the image for accessibility purposes:

  • ![Sample Dog Image](https://example.com/dog.jpg) →

内容的提问来源于stack exchange，提问作者Becky Purland