Hi, In R.app 3.2.0, doing ?function -> index -> vignettes -> pdf
R.app requests a version of Adobe Reader. I don’t have this installed, but all OS X users have preview.app Could the help service be coded to either: 1. just open pdfs (that way they’ll be in a stand alone app configured by the user. 2. set preview.app as the default in-app viewer? my version is _ platform x86_64-apple-darwin13.4.0 arch x86_64 os darwin13.4.0 system x86_64, darwin13.4.0 status major 3 minor 2.0 year 2015 month 04 day 16 svn rev 68180 language R version.string R version 3.2.0 (2015-04-16) nickname Full of Ingredients > _______________________________________________ R-SIG-Mac mailing list R-SIG-Mac@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-mac