How to make the WebIDE pop-up moveable / draggable and custom sized?

During testing I found this option:

• add lines to app.js, just before setting data to api (at the end of function openPopup)
  if(options.attachTo){
  var loc = $(options.attachTo).offset();
  $("#" + options.id).css({position:"absolute"}).o­ffset({top:loc.top,left:loc.left});
  }
  
• add an attribute to object to call of openPopup
  Espruino.Core.App.openPopup({
  position: "relative",title:.....,attachTo:"#id of object where popup should be on screen"...})