# Mục lục

Help On LaTeX Commands

## Hypertext Help with LaTeX

Help by Subject,
Command, or Environment

### LaTeX Commands

A LaTeX command begins with the command name, which consists
of a \ followed by either (a) a string of letters or
(b) a single non-letter. Arguments contained in square brackets
[] are optional while arguments contained in braces {} are
required.

Note: LaTeX is case sensitive. Enter all commands in lower case
unless explicitly directed to do otherwise.

### LaTeX Environments

LaTeX environments are created by

    \begin{environment}  ...  \end{environment}

Declarations can be effected by an
environment of the same name.