LaTeX mode, and its variant, SliTeX mode, provide a few extra features not applicable to plain TeX.
In LaTeX input, `\begin' and `\end' commands are used to
group blocks of text. To insert a `\begin' and a matching
`\end' (on a new line following the `\begin'), use C-c
tex-latex-block). A blank line is inserted between the
two, and point is left there. You can use completion when you enter the
block type; to specify additional block type names beyond the standard
list, set the variable
latex-block-names. For example, here's
how to add `theorem', `corollary', and `proof':
(setq latex-block-names '("theorem" "corollary" "proof"))
In LaTeX input, `\begin' and `\end' commands must
balance. You can use C-c C-e (
insert automatically a matching `\end' to match the last unmatched
`\begin'. It indents the `\end' to match the corresponding
`\begin'. It inserts a newline after `\end' if point is at
the beginning of a line.
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