title: What is "off-screen-rendering" in ChromiumEmbeddedFramework (CEF)
body: <p>I am not able to understand the term "off-screen-rendering" in the context of chromium embedded framework.</p>
  
  <p>When should it used or How should it used.</p>
  
  <p>It is very deep in the codebase(cef) to trace and find some meaning. </p>
  
  <p>Please help.</p>