Guitar chords

Demonstration of chords.sty, a library for generating guitar chord diagrams.

Edit and compile if you like:

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% Guitar chords
% Author: Christoph
% Source: http://rio.eta-ori.net/latex-chords/chords.sty
%         http://rio.eta-ori.net/latex-chords/example.tex
\documentclass{article}
\usepackage{subfig}
\usepackage{tikz}
%% Code from chords.sty
% Counters
\newcounter{chords-string}
\newcounter{chords-fret}
% Variables
\newcommand{\chordreset}{
  \def\chordtuning{E,A,D,G,B,E}
  \def\chordfretstart{1}
  \def\chordfretend{4}
}
\chordreset
% The chord environmant
% \begin{chord}
% \begin{chord}[D,G,D,G,H,E]
\newenvironment{chord}
{
  % A single note
  % \single   
  \newcommand{\single}[3]{
    \draw node[single] at (##1,##2) {##3};
  }
  % A bar
  % \bar   
  \renewcommand{\bar}[3]{
    \draw[bar] (##1,##2) -- node[midway] {##3} (1,##2);
  }
  % No strike
  % \nostrike 
  \newcommand{\nostrike}[1]{
    \draw[nostrike] (##1,\chordfretstart-.5) +(-135:.2cm) -- +(45:.2cm);
 
 
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