There are currently eight items which can be returned. Most are from a common noticeboard area but GLOBAL_BASE is an address within the address space of the caller. Unless otherwise stated, all are integers.
CHAN => Channel to open noticeboard file (zero if not open) DEFN_SIZE => Size of definition part of noticeboard FILE_SIZE => Size of noticeboard definition file GLOBAL_BASE => Address of noticeboard start MODIFIED => Total number of times values have been modified PID => PID of owner of this noticeboard SECTION_SIZE => Total size of noticeboard including data VERSION => Software version creating file / noticeboard
NBS__NILID NIL ID
NBS__BADOPTION Illegal item name
NBS The Noticeboard System