Merge branch 'oetiker:master' into master

src/basics.tex

@@ -710,7 +710,7 @@ \section{Packages}\index{package} While writing your document, you will
     \pai*{makeidx}     & Provides commands for producing indexes. Described
     in \autoref{sec:indexing}.                                                \\
 
-    \pai*{fancyhdr}    & Let's you easily customise page headers and footers.
+    \pai*{fancyhdr}    & Lets you easily customise page headers and footers.
     Described in \autoref{sec:fancy}.                                         \\
 
     \pai*{beamer}      & Provides a document class that changes output to

src/graphic.tex

@@ -104,9 +104,9 @@ \section{Basic Usage}
 \ltx|--|, which draws a straight line.
 \begin{example}
 \begin{tikzpicture}
-  \draw (0, 0)
-    -- (15:4)
-    -- (1, 2);
+  \draw (0, 0) % bottom left
+    -- (15:4)  % angle:length
+    -- (1, 2); % x,y
 \end{tikzpicture}
 \tikz{\draw (0, 0) -- (1,1);}
 \end{example}

src/math.tex

@@ -160,7 +160,7 @@ \subsection{Math Mode}
 now be used to typeset \wi{superscript}s and \wi{subscript}s, respectively.
 \begin{example}
 \( a^2 + b^2 = c^2 \) \\
-\( A_x = G_{\text{foo}} \)
+\( A_x = G_{a\times c} \)
 \end{example}
 
 \section{Building Blocks of Mathematical Formulae}