dave$ brew reinstall graphviz
==> Reinstalling graphviz
==> Downloading https://homebrew.bintray.com/bottles/graphviz-2.40.1_1.high_sier
Already downloaded: /Users/dave/Library/Caches/Homebrew/downloads/2bf5346e72953a60aa26af766451ff7cf1439f4c020c0dc24ee5db10b9795ade--graphviz-2.40.1_1.high_sierra.bottle.tar.gz
==> Pouring graphviz-2.40.1_1.high_sierra.bottle.tar.gz
? /usr/local/Cellar/graphviz/2.40.1_1: 500 files, 11.3MB
我用自制软件安装了graphviz。那之后我该如何启动呢?