• HARP is a good place to introduce hard concepts in plain language. We hope to emulate the writing style of Numerical Recipes in C. In the preface to the $2^{nd}$ edition, the authors described their style in the $1^{st}$ edition as ``…informal, fearlessly editorial, unesoteric, and above all useful.’’

• The intent of HARP is to introduce complex concepts, so please keep it short and aim for one of the following:

  • lecture notes

  • a user’s guide

  • a vignettes that teach a single concept

  • insightful commentary

• If a document is getting too long and complex, consider splitting it up.

• Publish the long version, write the short version here, and add citations. In general, we don’t want long essays or drafts.

• We think academic journals are the best place to put complex analyses, or discussions of highly technical material. Any new methods and new concepts should go through peer review.

• Please use the functionality to embed instructive R-code:

x = seq(-3, 3, length.out=200)
plot(x, x^2-4, type = "l", ylab = expression(x^2-4))
segments(-3, 0, 3, 0, col = grey(0.8))

• References are strongly encouraged. The bibliography is refs.bib using the plos citation style. To add a citiation, use [@cite-key].

• If there are any references, the last tab should be called Refs. For example, [@WernsdorferWH1988MalariaPrinciples] is a citation to Malaria: Principles and Practice of Malariology [1].

• If you want to cite something but you can’t find it in refs.bib, tell Dave it’s missing and send a link.