title: How do I access the _context variable within a macro in TWIG?
body: <p>I'm trying to access one of my twig variables in a macro.   I know I can't do this directly.</p>
  
  <blockquote>
    <p>as with PHP functions, macros don't have access to the current template variables</p>
  </blockquote>
  
  <p>but the same page state:</p>
  
  <blockquote>
    <p>You can pass the whole context as an argument by using the special _context variable.</p>
  </blockquote>
  
  <p>What's the syntax for passing _context to the macro, and for accessing it within the macro?</p>
  
  <p>thanks</p>