acm_article             Association for Computing Machinery (ACM)
                        format.
acs_article             American Chemical Society (ACS) Journal format.
aea_article             American Economic Association journal
                        submissions.
ams_article             American Meteorological Society (AMS) Journal
                        format.
asa_article             American Statistical Association (ASA) Journal
                        format.
ctex                    A PDF format for documents based on the LaTeX
                        package 'ctex'
elsevier_article        Elsevier journal format.
jss_article             Journal of Statistical Software (JSS) format.
plos_article            PLOS journal format.
pnas_article            PNAS journal format.
rjournal_article        R Journal format.
rss_article             Royal Statistical Society Journal Format
sim_article             Statistics in Medicine format.
