Chapter 2 Introduction

The [note] sign is historically equal to the asterisks used by Aristarchus of Samothrace at the Mouseion at Alexandria. It was used for the critical editions of Homer’s writings where it “marked a verse incorrectly repeated in another passage” and was used together with other signs such as the obelus. L.D. Reynolds and N.G. Wilson. Scribes and Scholars: A guide to the Transmission of Greek and Latin Literature. Oxford University Press, 1991, 3rd edition, ISBN 0-19-872146-3, p. 10-11 The London printer Richard Jugge is generally credited as the inventor of the footnote, first used in the Bishops’ Bible of 1568. Chuck Zerby, The Devil’s Details: A History of Footnotes, 2007, ISBN 1931229058, p. 28 and passim

Early printings of the Douay Bible used two closely spaced colons (actually squared four dot punctuation mark U+2E2C) to indicate a marginal note. (Source: Wikipedia)

You can label chapter and section titles using {#label} after them, e.g., we can reference Chapter 2. If you do not manually label them, there will be automatic labels anyway, e.g., Chapter ??.

Figures and tables with captions will be placed in figure and table environments, respectively. Here is fancy footnote.

par(mar = c(4, 4, .1, .1))
plot(pressure, type = 'b', pch = 19)
Here is a nice figure!

Figure 2.1: Here is a nice figure!

Reference a figure by its code chunk label with the fig: prefix, e.g., see Figure 2.1. Similarly, you can reference tables generated from knitr::kable(), e.g., see Table 2.1.

knitr::kable(
  head(iris, 20), caption = 'Here is a nice table!',
  booktabs = TRUE
)
Table 2.1: Here is a nice table!
Sepal.Length Sepal.Width Petal.Length Petal.Width Species
5.1 3.5 1.4 0.2 setosa
4.9 3.0 1.4 0.2 setosa
4.7 3.2 1.3 0.2 setosa
4.6 3.1 1.5 0.2 setosa
5.0 3.6 1.4 0.2 setosa
5.4 3.9 1.7 0.4 setosa
4.6 3.4 1.4 0.3 setosa
5.0 3.4 1.5 0.2 setosa
4.4 2.9 1.4 0.2 setosa
4.9 3.1 1.5 0.1 setosa
5.4 3.7 1.5 0.2 setosa
4.8 3.4 1.6 0.2 setosa
4.8 3.0 1.4 0.1 setosa
4.3 3.0 1.1 0.1 setosa
5.8 4.0 1.2 0.2 setosa
5.7 4.4 1.5 0.4 setosa
5.4 3.9 1.3 0.4 setosa
5.1 3.5 1.4 0.3 setosa
5.7 3.8 1.7 0.3 setosa
5.1 3.8 1.5 0.3 setosa

You can write citations, too. For example, we are using the bookdown package (Xie 2020) in this sample book, which was built on top of R Markdown and knitr (Xie 2015).

References

Xie, Yihui. 2015. Dynamic Documents with R and Knitr. 2nd ed. Boca Raton, Florida: Chapman; Hall/CRC. http://yihui.org/knitr/.

Xie, Yihui. 2020. Bookdown: Authoring Books and Technical Documents with R Markdown. https://CRAN.R-project.org/package=bookdown.