30.5 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.
• Refill: Keeping paragraphs filled.
• 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.
• Longlines: Editing text with very long lines.