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     Indent current line "appropriately" in a mode-dependent fashion.

     Perform RET followed by TAB (`newline-and-indent').

     Merge two lines (`delete-indentation').  This would cancel out the
     effect of LFD.

     Split line at point; text on the line after point becomes a new
     line indented to the same column that it now starts in

     Move (forward or back) to the first non-blank character on the
     current line (`back-to-indentation').

     Indent several lines to same column (`indent-region').

`C-x TAB'
     Shift block of lines rigidly right or left (`indent-rigidly').

     Indent from point to the next prespecified tab stop column

`M-x indent-relative'
     Indent from point to under an indentation point in the previous

   Most programming languages have some indentation convention.  For
Lisp code, lines are indented according to their nesting in
parentheses.  The same general idea is used for C code, though details

   Use the TAB command to indent a line whatever the language.  Each
major mode defines this command to perform indentation appropriate for
the particular language.  In Lisp mode, TAB aligns a line according to
its depth in parentheses.  No matter where in the line you are when you
type TAB, it aligns the line as a whole.  In C mode, TAB implements a
subtle and sophisticated indentation style that knows about many
aspects of C syntax.

   In Text mode, TAB runs the command `tab-to-tab-stop', which indents
to the next tab stop column.  You can set the tab stops with `M-x

* Indentation Commands
Various commands and techniques for indentation.
* Tab Stops
You can set arbitrary "tab stops" and then indent to the next tab stop when you want to.
* Just Spaces
You can request indentation using just spaces.

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