GNU Emacs Manual. Node: Filling

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19.5: Filling Text

Filling text means breaking it up into lines that fit a specified width. Emacs does filling in two ways. In Auto Fill mode, inserting text with self-inserting characters also automatically fills it. There are also explicit fill commands that you can use when editing text leaves it unfilled. When you edit formatted text, you can specify a style of filling for each portion of the text (see Formatted Text).

  • Auto Fill Auto Fill mode breaks long lines automatically.
  • Fill Commands Commands to refill paragraphs and center lines.
  • Fill Prefix Filling paragraphs that are indented or in a comment, etc.
  • Adaptive Fill How Emacs can determine the fill prefix automatically.
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