     for i in [0...@numFrames]
       @markingSurfaceList[i] = new MarkingSurface
         tool: MarkingTool
+      @markingSurfaceList[i].svg.attr 'viewBox', '256 0 256 256' if BIG_MODE
       @markingSurfaceList[i].svgRoot.attr 'id', "classifier-svg-root-#{i}"
       @surfacesContainer.append @markingSurfaceList[i].el
 

        @markingSurfaceList[i].addShape 'image',
        id:  frame_id
        class:  'frame-image'
        width:  '100%'
        height: '100%'
        preserveAspectRatio: 'true'

      img_src = if @invert then subject_info.inverted[i] else subject_info.standard[i]

MarkingTool    = require './marking-tool'
# MarkingToolControls = require './marking-tool-controls'
InvertSvg      = require '../lib/invert-svg-image'

BIG_MODE = !!~location.search.indexOf 'big=1'

KEYS =
  space:  32
