Commands' supporting policy.

Since ORAC is free of charge no professional support is provided. Bugs are fixed, upon request to the E-mail address oracmaster@cecdec.cecam.fr, at the authors earliest convenience and support may be requested only for environments, commands or sub-commands which are not marked unsupported in this manual. ORAC is simultaneously an ancient code and a new code which is still in the developing stage. ORAC has indeed a stable ``core'' i.e. the part which is officially maintained, but it also has some obsolete options, some features used for diagnostic or debugging purposes and some other experimental features not yet fully tested, i.e. the unsupported material. Unsupported features are by no means essential to the ORAC functioning and may belong to three categories:

• Experimental:
  These features have been generally tested on only one or two unix platform (usually OSF1 or HP-UX), some of them can be used only while running in single time mode, some other can be used only while running with r-RESPA. These features are documented normally and in the WARNINGS section they are referred as
  Experimental - Unsupported.
• Diagnostic:
  These feature were introduced in the developing stage for diagnostics and debugging purposes. In the current version the diagnostic features are kept since they may turn to be useful to the programmer when modifying the code. These features are documented normally and in the WARNINGS section they are referred as
  Diagnostic - Unsupported.
• Obsolete features:
  These features are no longer used and will be eliminated in the next ORAC release. They are poorly documented and they are referred as
  Obsolete - Unsupported.