title: What is the JavaFX runtime?
body: <p>In  the documentation it is often said that 'the JavaFX runtime' is doing XY in the background - but what is "the runtime"? 
  If I understand correct (please edit) the runtime is made of the following parts:</p>
  
  <ul>
  <li>all classes etc. of the JavaFX framework, located in package javafx and stored in the jxfrt.jar file</li>
  <li>the 'JavaFX-Launcher' thread</li>
  <li>the 'JavaFX Appliaction Thread': all Objects and threads running your JavaFX application. They are created by the JavaFX-Launcher thread when the Appplication.launch() method was called.</li>
  </ul>
  
  <p>My question is: What is <strong>the</strong> runtime?</p>