anchor.diff:  long or not informative enough.
   
   |`:color`
  +|white
   
   |Sets the color of the cue within the grid for hinting about its
   purpose and relatedness to other cues, to help operators learn and
  
positive.code: be present in their fixtures.
  
  |`:held`
  
  |As described <<cues#held-flag,above>>, causes the cue's effect to run only
  as long as the corresponding controller button or pad is held down, if
  
negative.code: alone.
  
  |`:priority`
  |`0`
  
  |Sets the effect priority used when adding the cue's effect to the
  show. This can be used to make sure the effect runs before or after
  