Okay, we have typed enough. At this stage, hopefully, your file is looking something like this:
1 % File: sample.tex
2 % Created: Sun Jun 22 04:00 PM 2003 P
3 % Last Change: Mon Dec 15 07:00 PM 2003
4 %
5 \documentclass[a4paper]{article}
6
7 \usepackage[sumlimits,]{amsmath}
8
9 \begin{document}
10 \begin{eqnarray}
11 \label{eqn:euler}
12 e^{j\pi} + 1 &=& 0
13 \end{eqnarray}
14 This is the famous euler equation. I
15 will type another equation, just as
16 true:
17 \begin{eqnarray}
18 \label{eqn:simple}
19 1 + 1 &=& 2
20 \end{eqnarray}
21 This is my contribution to mathematics.
22 \end{document}
In normal mode, press \rf. This will fold up the
entire file and you should see the file looking as below:
1 % File: sample.tex
2 % Created: Sun Jun 22 04:00 PM 2003 P
3 % Last Change: Mon Dec 15 07:00 PM 2003
4 %
5 +-- 4 lines: Preamble: \documentclass[a4paper]{article} -----
9 \begin{document}
10 +-- 4 lines: eqnarray (eqn:euler) \label{eqn:euler} -----------
14 This is the famous euler equation. I
15 will type another equation, just as
16 true:
10 +-- 4 lines: eqnarray (eqn:simple) \label{eqn:simple} ---------
21 This is my contribution to mathematics.
22 \end{document}
What has happened is that Latex-Suite folded away blocks of LaTeX code into
folded regions. You can open and close folds by using the command
za in normal mode.