magnet:?xt=urn:btih:e6d3313fa695689afffb2cb4801eefade16f7f8e&xt=urn:md5:21485ad3e47bd1845268f236d0866339&xl=3300518&dn=qtdoc-opensource-src-5.7.1.zip&as=https://download.qt.io/new_archive/qt/5.7/5.7.1/submodules/qtdoc-opensource-src-5.7.1.zip&tr=http://bt.qt-project.org:6969/announce