Memo: how to type doubledash "--" and underline "_" in LaTex?

How to type double dash in LaTex?

Sometimes we need to type "--" in LaTex, but the parser of Tex will deal with it into one dash.

If you try "- -" a space in two dash, it is not the same with "--".

So you can try

• \texttt{ }: I think it is good but the format and size of character should be customized.
  
• -{}-: Excellent. Nature!

Reference from

http://www.latex-community.org/forum/viewtopic.php?f=44&t=4670&start=0

Underline is reserved character of LaTex

The reserved characters are

• $ : dollar sign
• & :
• %
• #
• _
• {
• }
• ~
• ^
• \
  

If you want to type them, just add a "\" before them.

http://www.agu.org/meetings/mtabsLTX.html

Memo: How to put a character below or under a word?

http://www.gamedev.net/community/forums/topic.asp?topic_id=436284

Use \underset and \overset

%

\begin{equation}\label{Eq:formula3}

    \hat{P} = \underset{P}{\text{argmin}}\{F(P)\},

\end{equation}

%

You will get

輸出eps檔案，以利用在插入latex檔案

關鍵字：設定PostScript printer，轉成eps檔案，latex

1. 安裝好Adobe PostScript Driver (PS印表機)
2. 列印的ppt或是任何文件檔成prn檔時，選擇Generic PostScript Printer，並勾選"列印至檔案"
3. 設定好Postscipt Printer，按下"內容"，選擇"進階"，展開"PostScript選項"
4. 選擇PostScript輸出選項為"壓縮式PostScript(EPS)"
5. 按下列印後，打開輸出好的XXX.prn，使用GSview打開。
6. Orientation選擇"Portrait"，Media看輸出圖片大小可選擇"A4"或"A3"。
7. 打開"File"，選擇"PS to EPS"，選擇輸出檔案名稱和位置。
8. XXX.eps就可以用囉!
例如，
\begin{figure}
\centering
\includegraphics[width=0.3\textwidth]{XXX.eps}
\caption{This is test!}
\label{fig:test}
\end{figure}