https://gitronald.r-universe.dev/fileshttps://gitronald.r-universe.dev/api/packages/fileshttps://gitronald.r-universe.dev/files/files.pdfhttps://gitronald.r-universe.dev/files/doc/manual.htmlhttps://gitronald.r-universe.dev/files/NEWShttps://gitronald.r-universe.dev/files/NEWS.txthttps://gitronald.r-universe.dev/files/citationhttps://gitronald.r-universe.dev/files/citation.txthttps://gitronald.r-universe.dev/files/citation.cff