#### 7.2.66 look-encompass-size

`(look-encompass-size [view-fraction clip-ratio near-margin far-margin])`
  Sets/returns parameters used by (look-encompass). view-fraction is the portion of the janela de câmera filled by the objeto, clip-ratio is the max allowed ratio of near-to-far clipping planes. The near clipping plane is 1/near-margin times closer than the near edge of the objeto, and the far clipping plane is far-margin times further away. Returns the list of current values. Defaults: .75 100 0.1 4.0