Running Sphinx v3.2.1
loading translations [en]... done
making output directory... done
building [mo]: targets for 0 po files that are out of date
building [html]: targets for 3 source files that are out of date
updating environment: [new config] 3 added, 0 changed, 0 removed
reading sources... [ 33%] IntroductionToG4
reading sources... [ 66%] StatusOfThisDocument
reading sources... [100%] index

looking for now-outdated files... none found
pickling environment... done
checking consistency... done
preparing documents... done
writing output... [ 33%] IntroductionToG4
writing output... [ 66%] StatusOfThisDocument
writing output... [100%] index

generating indices...  genindexdone
writing additional pages...  searchdone
copying images... [100%] figures/classCategory.png

copying static files... ... done
copying extra files... done
dumping search index in English (code: en)... done
dumping object inventory... done
build succeeded.

The HTML pages are in _build/html.