--- a/dottes.tex	Thu Jul 11 17:52:11 2013 +0100
+++ b/dottes.tex	Fri Jul 12 11:36:14 2013 +0100
@@ -7,7 +7,7 @@
 \usepackage{fancyhdr}
 \usepackage{longtable}
 \usepackage[UKenglish]{babel}
-\usepackage[UKenglish]{isodate}
+%\usepackage[UKenglish]{isodate}
 
 % Non-indented paragraphs with space between them.
 \usepackage{parskip}
@@ -27,12 +27,46 @@
 
 % ----- Common variables
 
-\def \build {\input{buildno.txt}}
-\def \instrument {\input{instrument.txt}}
+\newcommand{\build}{\input{buildno.txt}}
+\newcommand{\instrument}{\input{instrument.txt}}
 
 % Havoc purple is #9900cc.
 \definecolor{havocpurple}{rgb}{0.597,0,0.797}
 
+% ----- Macros
+
+\makeatletter
+\def\ifemptyarg#1{%
+  \if\relax\detokenize{#1}\relax % H. Oberdiek
+    \expandafter\@firstoftwo
+  \else
+    \expandafter\@secondoftwo
+  \fi}
+\makeatother
+
+% Show the main tune graphic and optional change.
+% Args are change title (optional), tune title, tune graphic filename.
+\newcommand{\showtune}[3][]{%
+  \vfill
+  \begin{center}
+  \phantomsection
+  \hypertarget{#2}{%
+    \includegraphics[width=\textwidth,height=0.85\textheight,keepaspectratio]{#3}
+  }
+  \addcontentsline{toc}{section}{#2}
+  \end{center}
+  \ifemptyarg{#1}{}{%
+    Change: \hyperlink{#1}{#1}
+  }%
+}
+
+% Show the tune first line. Generate table row.
+% Args are the tune title and the first line graphic filename.
+\newcommand{\showfirstline}[2]{%
+  \hyperlink{#1}{#1} & %
+    \raisebox{-.25\height}{\includegraphics[width=0.65\textwidth,height=1.3cm]{#2}} \\
+}
+
 % ----- Paper size document setup
 
 \input{docsetup.tex}