title: What's a "hook" in HTML?
body: <p>In an interview recently a developer asked me what "hooks" Angular has "into HTML." I told him frankly I'd never heard the term "hook" before. I have a few guesses, just from the sound of it, but I'm not going to speculate in an interview.</p>
  
  <p>What is/are a hook/hooks in HTML? I have been doing web development for 20+ years and never heard the term before (or if I heard it before I dismissed it.)</p>
  
  <p>I'm sure it's programmer slang for something I've done a million times and just never heard the term before.</p>
  
  <p>I've looked for the term online but the only definitions I get are vague and general, not plain and specific enough for me. I want a plain English and specific definition, preferably with examples.</p>