Ghost Letters 幽霊文字

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BBB - Head Meta

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Each HTML document consist of two basic building blocks: a head and a body. The body contains the actual content while the head consists mainly of meta information. Meta information helps the browser to display the body content in the most appropriate way. Furthermore, it helps other machines to make sense of your page. Machines can be search engine robots or social media platforms like Twitter or Mastodon. When you post a link there, the platform tries to display some preview information like a picture and a short summary.