content: ' entry point of MainScene
  ' this function initializes variables referencing components in the xml file
  ' that variables can then be used throughout the brightscript file
  sub Init()
    m.top.backgroundColor = "0x6fbb1"
    m.top.backgroundUri = "pkg:/images/background.jpeg"
    m.loadingIndicator = m.top.findNode("loadingIndicator") ' store loadingIndicator node to m
    InitScreenStack()
    ShowGridScreen()
    RunContentTask() ' retrieving content
  end sub
  