• Interoperability options:

  XBC	Use X-Midas primitives inside NeXtMidas.
  NeXtOpt	Use NeXtMidas as an X-Midas option tree.

• When to use which option:

  XBC	Used when a NeXtMidas application needs to use an existing X-Midas primitive.
  NeXtOpt	Used when an X-Midas application needs to use NeXtMidas functionality.

• Important note:
  • The "guest" application assumes many of the traits of the host shell.
    • For XBC this means that the X-Midas primitive has access to NeXtMidas pipes, tables, files (including URLs), etc. (This provides additional capabilities to an X-Midas primitive.)
    • For NeXtOpt this means that the NeXtMidas primitive is restricted to using numbered AUXs, numbered IDs, static X-Midas pipes, shared global-section messages, etc. (This limits the normal NeXtMidas capabilities.)