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By Juergen Haas, About.com

Special commands of C, C++, Objective-C, Java, and Pike modes.
  • Fortran: Fortran mode and its special features.
  • Asm Mode: Asm mode and its special features.

    Top-Level Definitions, or Defuns

  • Left Margin Paren: An open-paren or similar opening delimiter starts a defun if it is at the left margin.
  • Moving by Defuns: Commands to move over or mark a major definition.
  • Imenu: Making buffer indexes as menus.
  • Which Function: Which Function mode shows which function you are in.

    Indentation for Programs

  • Basic Indent: Indenting a single line.
  • Multi-line Indent: Commands to reindent many lines at once.
  • Lisp Indent: Specifying how each Lisp function should be indented.
  • C Indent: Extra features for indenting C and related modes.
  • Custom C Indent: Controlling indentation style for C and related modes.

    Commands for Editing with Parentheses

  • Expressions: Expressions with balanced parentheses.
  • Moving by Parens: Commands for moving up, down and across in the structure of parentheses.
  • Matching: Insertion of a close-delimiter flashes matching open.

    Manipulating Comments

  • Comment Commands: Inserting, killing, and indenting comments.
  • Multi-Line Comments: Commands for adding and editing multi-line comments.
  • Options for Comments: Customizing the comment features.

    Documentation Lookup

  • Info Lookup: Looking up library functions and commands in Info files.
  • Man Page: Looking up man pages of library functions and commands.
  • Lisp Doc: Looking up Emacs Lisp functions, etc.

    C and Related Modes

  • Motion in C: Commands to move by C statements, etc.
  • Electric C: Colon and
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