- recalling a scene by seeing it again is called in Dn visio, by which is meant
    visual recall. (SOS, p. 72) 
 
  - with visio we perceive light waves, which, as sight, are compared with experience and
    evaluated. (SOS, p. 59) 
 
  - the ability to see in facsimile form something one has seen earlier so that one sees it
    again in the same color, dimension scale, brightness and detail as it was originally
    viewed. (PXL, p. 230)