Wrote section on presentation

presentation/presentation.md

@@ -160,3 +160,58 @@ We're talking inline \(F = ma\) versus full display:
     - Each `\section` now defines an appendix, not a "chapter"
     - Should probably have been an environment, but alas
 
+## Part 2: Presentation
+
+> I used to fight all the time with my typesetter about where
+> the images should be placed. Now I use \LaTeX and have accepted
+> that I'll never win.
+
+. . .
+
+The \TeX typesetting engine is really powerful and will probably make
+better choices than you.
+
+## Linebreaks and pagebreaks
+
+- Empty line: separates paragraphs
+    - Depending on settings, this may not produce empty lines in the compiled document
+- `\\`: forces linebreak
+    - Used in tables, matrices and multiline math
+    - Can *force air* between paragraphs, but be careful
+- `\newpage`: forces the rest of the page to be empty
+- `\mbox`: forces words to "stay together", no hyphenation
+- `~`: non-breaking space
+
+## vspace and hspace
+
+- `\vspace`: vertical spacing
+- `\hspace`: horizontal spacing
+- Valid lengths are:
+    - `cm, mm, em, ex, pt, mu, sp`
+    - ... and some more
+- Lengths may be **negative**
+
+
+## Defualt/documentwide lengths and widths
+
+- `\parskip`: space when skipping to next paragraph
+- `\parindent`: indent space on the first line of a paragraph
+- `\baselinestretch`: how tall is a line?
+- `\setstretch` and `\itemsep`: line height in itemize/enumerate environments
+
+## MATH - but displaystyle this time
+
+- `\textstyle`: inline math, when using `\(...\)`
+- `\displaystyle`: math in *it's own box*
+    - With `equation`, `gather`, `align` and `\[...\]`
+- `\scriptstyle`: when showing in sub/superscript
+- `\scriptscriptstyle`: when sub/superscript is nested!
+
+## Figures and tables
+
+- Width, height and angle:
+    - `[width=\textwidth, height=100mm, angle=45]`
+- `[!htbp]`
+    - Here, top, bottom and "special page"
+- Floats
+    - They *float around* and cannot be broken up