grep -rn -A 1 '$ stack ghci' part1.html
part1.html:293:<pre><code>$ stack ghci
part1.html-294-GHCi, version 8.0.1: http://www.haskell.org/ghc/ :? for help
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part1.html:891:<pre><code>$ stack ghci
part1.html-892-GHCi, version 8.2.2: http://www.haskell.org/ghc/ :? for help
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part1.html:1122:<pre><code>$ stack ghci Set1.hs
part1.html-1123-GHCi, version 8.6.5: http://www.haskell.org/ghc/ :? for help