CYCLE COLOURS                                                      <Alt>+Z

  This function allows you to set the colours for a block of text to produce
  an effect where the colour cycles from one value to another. The back-
  ground will be set to the current background colour. The current text
  colour determines the range of text colours as follows:

  Current colour     | Colour range                       | Example
  -------------------+------------------------------------+-------------
  Black              | DarkGray - LightGray - White       |   Testing  
  Blue               | Blue - BrightBlue - BrightCyan     |   Testing  
  Green              | DarkGray - Green - BrightGreen     |   Testing  
  Cyan               | LightGray - Cyan - BrightCyan      |   Testing  
  Red                | DarkGray - Red - BrightRed         |   Testing  
  Magenta            | DarkGray - Magenta - BrightMagenta |   Testing  
  Brown              | Green - BrightGreen - Yellow       |   Testing  
  LightGray          | Brown - Yellow - White             |   Testing  
  DarkGray           | White - LightGray - DarkGray       |   Testing  
  BrightBlue         | BrightCyan - BrightBlue - Blue     |   Testing  
  BrightGreen        | BrightGreen - Green - DarkGray     |   Testing  
  BrightCyan         | BrightCyan - Cyan - LightGray      |   Testing  
  BrightRed          | BrightRed - Red - DarkGray         |   Testing  
  BrightMagenta      | BrightMagenta - Magenta - DarkGray |   Testing  
  Yellow             | Yellow - BrightGreen - Green       |   Testing  
  White              | White - Yellow - Brown             |   Testing  

  Use the arrow keys, <Home>, <End>, <PgUp> and <PgDn> to resize the box
  specifying the area that will be effected. <Tab> toggles between the top
  left and the bottom right corners when resizing. The <+> key allows you to
  alter the number of colours that will be used vertically - just the first
  colour in the range, the first and the second, or all three. The <-> key
  allows you to alter the number of colours that will be used horizontally.

  If you don't understand this explanation, just give it a try on a big
  block of text and press the <+> and <-> keys a couple of times until you
  know what's going on.