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  <title>Chapter 4 Introduction | A GitBook Example for Teaching</title>
  <meta name="description" content="This GitBook for teaching is an adaptation of the minimal bookdown example by Yihui Xie, available at https://bookdown.org/yihui/bookdown-demo The output format for this example is bookdown::gitbook." />
  <meta name="generator" content="bookdown 0.17 and GitBook 2.6