Advice on LaTeX Typesetting Logical Symbols and Figures
1feb11 corrected 26may11

\begin{document}

\section{Logical symbols}
LaTex is has codes which produce symbols like those in the picture.
But they do not have the obvious name. We remedy this in the preamble
by defining synonyms so you can use common names for the symbols instead
of the LaTeX names.

Thus (backslash is omitted for typographical reasons) instead of
writing (backslash)wedge you can write (backslash)and.

For \texttt{ texWins}, for example, you should use the preamble in
\texttt{ logicpreamble.txt} instead of the garden-variety in
\texttt{ preamble.txt}

\section{Figures}
\subsection{Introduction}
How to prepare figures to be inserted into LaTeX documents is discussed
elsewhere in Advice. Here we assume that you have two figures named
fred.png and ginger.jpg. \textbf{Never} ever give a file a name with a space
in it. So "Fred and Ginger.png" will result in disaster. Also, even though
texWins is case-sensitive (unlike Windows), do not expect any computer system
to distinguish between Fred.png and fred.png. You can use caps but two
different file names that only differ in case may also end in disaster.
\subsection{In the .tex file ....}
Here is how you edit the code for LaTeX. The code for a LaTeX file
in a textfile with the suffix .tex, for example, your Workspace in
texWhins, or the left have window in texPad and QAint (filecards),
this line must be in the preamble. But you can insert figures only into
a true LaTeX document, and hence you use texWins. You declare that you
will use the package called "gpaphicx" in the preamble. In the body you
insert four lines you copy from an sample file, and then edit it.

\subsection{The Example}
In the LaTeX sampler there are many example files. The one that you should
study now is called \texttt{ex1picture}. Click on  \texttt{ex1picture.pdf}
to see what the file looks like when typeset by texWins. Download
\texttt{ex1picture.tex} and copy and paste it into texWins. This will cause
an error because the associated image file is not loaded into texWins.
upload this to texWins. Now it will work.

In texWins, you can practice editing the 2nd and 3rd lines of the four
line figure-environment block in the LaTeX code, as shown in the green

figure. Notice the width can be changed from 1 to 2 inches. And the
caption can be edited to say what the figue does.

The caption is particularly important because LaTeX has a mind of its own
where it puts a figure in a document. So don't expect the picture and the
text to stay near each other. In your text refer to the figure by "Fig. 1"
etc. In the caption say enough for the reader to know what part of the text
the figure belongs to.

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