\nocite{*} \section{References} \printbibliography[heading=subbibnumbered,title={perl-related links},keyword=perl] \printbibliography[heading=subbibnumbered,title={conda-related links},keyword=conda] \index{conda} \printbibliography[heading=subbibnumbered,title={VScode-related links},keyword=vscode] \index{VSCode} \printbibliography[heading=subbibnumbered,title={Other links},keyword=other] \index{pre-commit} \index{MiKTeX} \index{contributors} \printbibliography[env=specialbib,heading=subbibnumbered,title={Contributors (in chronological order)\label{sec:contributors}},keyword=contributor]