lib/texinputs/pdfsetup.sty

more aggressive clean_directory(session_dir), while rm_tree is guarded by check_directory, i.e. it is presumably "owned" by Browser_Info.build_session();

%%
%% default hyperref setup (both for pdf and dvi output)
%%

\usepackage{color}
\definecolor{linkcolor}{rgb}{0,0,0.5}
\usepackage[colorlinks=true,linkcolor=linkcolor,citecolor=linkcolor,filecolor=linkcolor,urlcolor=linkcolor,pdfpagelabels]{hyperref}