https://mengxu98.r-universe.dev/thisutilshttps://mengxu98.r-universe.dev/api/packages/thisutilshttps://mengxu98.r-universe.dev/thisutils/thisutils.pdfhttps://mengxu98.r-universe.dev/thisutils/doc/manual.htmlhttps://mengxu98.r-universe.dev/thisutils/NEWShttps://mengxu98.r-universe.dev/thisutils/NEWS.txthttps://mengxu98.r-universe.dev/thisutils/citationhttps://mengxu98.r-universe.dev/thisutils/citation.txthttps://mengxu98.r-universe.dev/thisutils/citation.cff