This .NET class wraps the ChannelFlags ObjectARX class. It's an enumeration of Material Channels in use.

Public Enum ChannelFlags
  None = 0
  UseAll = &H3f
  UseBump = &H10
  UseDiffuse = 1
  UseOpacity = 8
  UseReflection = 4
  UseRefraction = &H20
  UseSpecular = 2
End Enum

public enum ChannelFlags {
  None = 0,
  UseAll = 0x3f,
  UseBump = 0x10,
  UseDiffuse = 1,
  UseOpacity = 8,
  UseReflection = 4,
  UseRefraction = 0x20,
  UseSpecular = 2
}