*RegisterExternalColumnReader()
Registers the specified external column reader.
Syntax
*RegisterExternalColumnReader (reader)
Application
HyperGraph 2D and HyperGraph 3D.
Inputs
- reader
 - The external column reader to register.
 
Context
*BeginDefaults()
*BeginPlot3DDefaults()
*BeginPlotDefaults()
Example
*BeginPlotDefaults()
   *RegisterExternalColumnReader(“C:/readers/extrdr.exe”)
*EndPlotDefaults()