ChartScreen Sub

 Action
 Sets the screen mode to be used when displaying a chart.


 Syntax
 ChartScreen n%

 Remarks
 The argument n% is an integer that contains a valid screen-mode number.
 This procedure must be used to set the screen mode instead of the standard
 BASIC SCREEN statement.
 If an invalid screen mode is used, the variable ChartErr will contain the
 number 25.


 See Also.  SCREEN Statement