## 7 Inserting a Reference

A necessary part of LaTeX editing is referencing equations, figures, bibliographic entries etc. This is done with the \ref and the \cite commands. Latex-Suite provides an easy way to do this. Somewhere in the body of the document, type in the following sentence

This is a reference to (\ref{}).

With the cursor between the {} press <F9> in insert mode. Your vim session will sprout two new windows and it should look like below:

      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:
17 +--  4 lines: eqnarray (eqn:simple) :  \label{eqn:simple}---------------------
21 This is my contribution to mathematics.
22 This is a reference to (\ref{}<++>)<++>
23 \end{document}
~
~
~
test.tex [+]                                                        22,29          Bot
test.tex|11| \label{eqn:euler}
test.tex|18| \label{eqn:simple}
~
~
~
[Error List]                                                        1,1            All
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:
test.tex [Preview][+]                                               11,2-5         46%


The cursor will relocate to the middle window which shows all \labels found in all the .tex file in the current directory. You can scroll up and down in the middle window till you reach the reference you want to insert. Notice how when you scroll in the middle window, the bottom "Preview" window scrolls automatically to show you the location of the current selection. This helps you identify the reference with greater ease because often times, \labels are not descriptive enough or there might be too many of them. To insert the reference, just position the cursor on the relevant line in the middle window and press <enter>. The line which you were editing will change to:

This is a reference to (\ref{eqn:euler})

and the bottom windows close automatically.

The <F9> key also works for inserting \cite commands to reference bibliographic entries, inserting file names for the \inputgraphics command and just plain searching for words. Click here for more information.