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According to 《The TeXBook》
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=============Update at 2012.01==============
hello this is a quote
> fonts
---\bf Bold fonts
---\it Italy fonts
---\rm Roman fonts
---\sl Slanted fonts
> {} mean a group like in C/C++.
> % ignores everything following it untill end of line.
> Something should be noted:
---A <return> is like a space.
---Two spaces in a row seem as one space.
---A blank line denotes the end of a paragraph
> In mathematics, '\$'->$, '\}'->}, '\%'->%, '\&'->&, '\#'->#.
> '\char<number>' stand for the symbel ( 0~255 )
> Must know '\S' '\dag' '\ddag'
> Unit of measure:
---pt point (baselines are 12pt)
---pc pica (1pc = 12pt)
---in inch (1in = 72.27pt)
---bp big point (72bp = 1in)
---cm centimeter (2.54cm = 1in)
---mm millimeter
---dd didot point
---cc cicero
---sp scaled point
> Should use \/ when shifting from a slanted font to unslanted one.
> symbel '~' or '\ ' donates a normal space.
> '\indent' does a indentation in horizontal mode.(\noindent)
> '$$(a+b)$$' would interrupts an paragraph.
> '\par' denotes an end of a paragraph.
> '~' seems as a space except don't broken by TeX.
> In mathematic mode, TeX will ignore any spaces between $'s.
> $$\alpha,\beta,\gamma,\delta;$$
> Note the difference: ${x^y}^z$, $x^{y^z}$
> Some important mathematic characters:
$\sqrt{a+b}$ $\overline{a+b}$ $\x^{a+b}$ $\root n \of x$ $\bar a$ $\vec a$
> $q_i^e$ == $q^e_i$
> Backslash: $\backslash$ or \textbackslash
> Note the difference: $(f+g)'$ and ${(f+g)}'$
> Some More Infomation about Math
$$a+b\over c+d$$ $$k\choose n$$ $$a+b\atop d+c$$ $$\sum x_n$$
> The Size of Pairs: \bigl,\Bigl,\biggr,\Biggr
> If you want use Roman type in formulas: {\rm roman}
> Use \quad \qquad in the formula of blank.
> \ldots,\cdots,\vdots,\ddots
> Macros: \def\REP{for}
=============Update at 2012.04.06==============
> insert a figure:
\usepackage{graphicx} \usepackage{subfigure} \begin{document} \begin{figure} \centering \subfigure[foo]{ \label{Fig.sub.1} \includegraphics[width=0.4\textwidth]{1.jpg} } \subfigure[bar]{ \label{Fig.sub.2} \includegraphics[width=0.4\textwidth]{2.jpg} } \end{figure} \end{document}
=============Update at 2012.04.08==============
> use columns in beamer
\begin{columns} \begin{column}{0.4\paperwidth}{ \begin{itemize} \item foo \item bar \end{itemize} }\end{column} \begin{column}{0.4\paperwidth}{ \begin{example} \item hello \item world \end{example} }\end{column} \end{columns}
> multiple authors list in beamer
\documentclass{beamer} \begin{document} \title{aaaa} \author{\begin{tabular}{lll} A & B & C\\ 123 & 234 &456 \end{tabular}} \maketitle \end{document}