title: text highlight in markdown
body: <p>Within a Markdown editor I want to support text highlight, not in the sense of code highlighting, but the type of highlighting people do on books.</p>
  
  <p>In code oriented sites people <code>can use backquotes</code> for a grey background, normally inline code within a paragraph. However on books there is the <strong>marker pen</strong> for normal text within a paragraph. That is the classical black text on yellow background.</p>
  
  <p>Is there any syntax within Markdown (or its variants) to specify that the user want that type of highlight? I want to preserve the backquotes syntax for code related marking, but also want a way to enable highlighted user text</p>
  
  <p>My first thought is just using double backquotes, since triple backquotes are reserved for code blocks. I am just wondering if other implementations have already decided a syntax for it... I would also appreciate if someone could justify if this is a very bad idea.</p>