magnet:?xt=urn:btih:4821c88b82c1b88608a47f51e8590668498f5de1&xt=urn:md5:15a74c033deabc1ee20fe9db9dba481a&xl=9778335&dn=qtdoc-everywhere-src-6.4.2.zip&as=https://download.qt.io/archive/qt/6.4/6.4.2/submodules/qtdoc-everywhere-src-6.4.2.zip&tr=http://bt.qt-project.org:6969/announce