ctex: A PDF format for documents based on the LaTeX package ctex
Description
ctex() is a wrapper function for rmarkdown::pdf_document() and
changed the default values of two arguments template and
latex_engine so it works better with the ctex package.
ctex() returns a format that can be passed to
rmarkdown::render(); ctex_template() returns the path to a
LaTeX template in rticles for Chinese documents using the ctex
package.