H Changes and New Features in Version 1.4

• New routine ERR_FACER is released to complete the distinction between various types of error code and the messages associated with them. (§3.15 and Appendix D.)
• The Starlink MESSGEN utility is now the preferred way of generating error codes and include files. (§3.3 and Appendix G)
• The deprecated reserved token, STATUS, is now treated as a Starlink facility error message. (§E.3.3)
• This document has been modified to reflect the above changes.