You should have a look at some of the official PowerShell scripts they’ve made to assist with managing, installing, and decommissioning Exchange Servers.

One had the word group misspelled consistently the entire way through it. Another had a wonderful comment noting that an internal function (to manage something with AD permissions or deep internals of the Exchange Server) that looked misspelled was in fact spelled correctly, because the command had a typo in the real name of it.