# (xemacs.info)TeX Editing

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20.1.2.1 TeX Editing Commands
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Here are the special commands provided in TeX mode for editing the text
of the file.

"'
Insert, according to context, either ' or "' or '''
(TeX-insert-quote').

<LFD>'
Insert a paragraph break (two newlines) and check the previous
paragraph for unbalanced braces or dollar signs (tex-terminate-
paragraph').

M-x validate-tex-buffer'
Check each paragraph in the buffer for unbalanced braces or dollar
signs.

C-c {'
Insert {}' and position point between them (tex-insert-braces').

C-c }'
Move forward past the next unmatched close brace (up-list').

C-c C-e'
Close a block for LaTeX (tex-close-latex-block').

In TeX, the character "' is not normally used; you use ' to
start a quotation and ''' to end one.  TeX mode defines the key "' to
insert ' after whitespace or an open brace, "' after a backslash,
or ''' otherwise.  This is done by the command tex-insert-quote'.  If
you need the character "' itself in unusual contexts, use C-q' to
insert it.  Also, "' with a numeric argument always inserts that
number of "' characters.

In TeX mode, $' has a special syntax code which attempts to understand the way TeX math mode delimiters match. When you insert a $' that is meant to exit math mode, the position of the matching $' that entered math mode is displayed for a second. This is the same feature that displays the open brace that matches a close brace that is inserted. However, there is no way to tell whether a $' enters math
mode or leaves it; so when you insert a $' that enters math mode, the previous $' position is shown as if it were a match, even though they
are actually unrelated.

If you prefer to keep braces balanced at all times, you can use C-c
{' (tex-insert-braces') to insert a pair of braces.  It leaves point
between the two braces so you can insert the text that belongs inside.
Afterward, use the command C-c }' (up-list') to move forward past the
close brace.

There are two commands for checking the matching of braces.  <LFD>
(tex-terminate-paragraph') checks the paragraph before point, and
inserts two newlines to start a new paragraph.  It prints a message in
the echo area if any mismatch is found.  M-x validate-tex-buffer'
checks the entire buffer, paragraph by paragraph.  When it finds a
paragraph that contains a mismatch, it displays point at the beginning
of the paragraph for a few seconds and pushes a mark at that spot.
Scanning continues until the whole buffer has been checked or until you
type another key.  The positions of the last several paragraphs with
mismatches can be found in the mark ring (Note: Mark Ring).

Note that square brackets and parentheses, not just braces, are
matched in TeX mode.  This is wrong if you want to  check TeX syntax.
However, parentheses and square brackets are likely to be used in text
as matching delimiters and it is useful for the various motion commands
and automatic match display to work with them.

In LaTeX input, \begin' and \end' commands must balance.  After
you insert a \begin', use C-c C-f' (tex-close-latex-block') to
insert automatically a matching \end' (on a new line following the
\begin').  A blank line is inserted between the two, and point is left
there.



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