anchor.diff:  reflect this (by using the same keyword to register their effects with
   the show), when you activate one, the other cues which use the same
   keyword are dimmed. This is a hint that when you activate one of them,
  -it will _replace_ the one you just started, rather than running at the
  +it will _replace_ the others, rather than running at the
   same time.
   
   The show may have many more cues than fit on the screen at once; the
  
positive.code: the larger grid. If there are more cues available in a given
  direction, that arrow will be enabled, otherwise it is dimmed.
  Clicking an active arrow scrolls the view one page in that direction.
  
  image:assets/CueScroll.png[Show control,align="right"]
  
  
negative.code: buttons of your controller, while simultaneously being able to control
  others via the screen and mouse. To do that, simply use the link menu
  to turn off the link.
  
  The final section of the show control interface lets you view and
  adjust the Metronome that the show is using to keep time with the
  music that is being played. Since Afterglow's effects are generally
  defined with respect to the metronome, it is important to keep it
  synchronized with the music. The metronome section shows the current
  speed, in Beats Per Minute, of the metronome, and the `Tap Tempo`
  button label flashes yellow at each beat. It also shows you the
  current phrase number, the bar within that phrase, and beat within
  that bar which has been reached.
  
  image:assets/Metronome.png[Metronome]
  
  The most basic way of synchronizing the metronome is to click the `Tap
  Tempo` button at each beat of the music. After a few clicks, the
  metronome will be approximately synchronized to the music. You can
  also adjust the BPM by dragging the slider along the bottom, or
  fine-tune it with the `+` and `-` buttons around the current BPM
  value.
  
  In order to make longer chases and effects line up properly with the
  music, you will also want to make sure the count is right, that the
  beat number shows `1` on the down beat, and that the bar numbers are
  right as well, so that the start of a phrase is reflected as bar
  number `1`. You can adjust those with the `+` and `-` buttons around
  the Bar and Beat numbers. A shortcut that you can use right as a
  phrase begins is to click the red `x` button above the phrase number,
  which resets the metronome to Phrase 1, Bar 1, Beat 1.
  
  
  