--- Render display steps  (watch instructor, then do on your own) ---

A. Get a reasonable slice display in afni (directory AFNI_data3/afni):
    1. Underlay : anat+orig - open 2 image windows

    2. Overlay  : func_slim+orig
        - set both OLay and Thr to Full_Fstat
        - threshold at F = 15.0
        - jump-to-xyz: -39 30 -1 (39R 30P 1I)
        - use 'Clusterize' to apply a cluster of 100 voxels
            o  radius can be 3.75: the largest voxel dimension
            o  note: 3.75*3.75*3.5 = 49.21875 (so 100 voxels = 5000 vmul)
         
B. Duplicate in the renderer : Define Datamode -> Plugins -> Render [new]
    1. Choose Underlay Dataset
        - anat+orig (and [Draw])
        - change underlay to strip+orig (and [Draw], to see difference)
          (created via: 3dSkullStrip -input anat+orig -prefix strip)

    2. Interlude: play with some buttons
        - View crosshairs in dark blue (via right-click on "See Xhairs")
        - set DynaDraw - so some changes result in automatic "Draw"
        - set Accumulate - to be able to review history of images
        - play with Roll/Pitch/Yaw arrows
        - make a cutout: Superior to, [Get], then change to 20 [Draw]
        - click Opacity Factor down to 0.1, then reset to 1
        - reset Roll/Pitch/Yaw to {70 120 0}
        - automate rolling by -6 degress, 25 times
            o  set Roll to: 70-6*t
            o  set Automate, and set Frames to 25
            o  [Compute]

    3. Choose Overlay Dataset: func_slim+orig
        - set Olay and Thr to Full Fstat
        - See Overlay [Draw]
        - set Thresh to 15 [Draw]
        - Cutout Overlay [Draw]
        - back on underlay: cutout "Superior to": [Get]
        - unset Cutout Overlay [Draw]
        - Remove Small Clusters [Draw]
            o  rmm: 1.21 (because it is resampled to underlay)
            o  vmul: 1000
        - re-automate 25 rotations

C. Make a nice rendering
    1. Make a final nice picture
        - set Cutout Overlay [Draw]
        - set ShowThru Mode [Draw]
        - set 'Color Opacity' to 0.3
        - unset Accumulate [Draw]       <-- clears history

    2. Create MPEG
        - reset Roll/Pitch/Yaw to {70 120 0} and [Draw]
        - set Accumulate
        - reautomate rolling by -6 degress, 60 times
        - [Sav:mpeg] to render (makes render.mpg)
            o  change "save" format to MPEG via right-click
        - can use "v" for video mode, or "r" for rebound in render window