myfirstimage.png
  # tag1, tag2, tag3
  title: Image Title
  caption: This is an image
  
gifs/balloons.gif
  # red, yellow, blue, green
  title: Balloons
  caption:
    An eternal line of balloons rise toward their death.
    They evade my hand running to the blaze.
  class = balloony float
  width=200
  height=200