%externalintegerfnspec B tree open by ID  (%record(fsys access fm)%name access,
                                           %integer request flags,
                                           %integer ID, mode,
                                           %integername access token, flags)
%externalintegerfnspec B tree close       (%integer access token, abandon)
%externalintegerfnspec B tree create      (%record(fsys access fm)%name access,
                                           %integer request flags,
                                           %string(31) name,
                                           %integer partition, benefactor ID,
                                           %integername ID)

%externalintegerfnspec B tree add entry   (%integer access token,
                                           %string(255) key, %integer data)
%externalintegerfnspec B tree find entry  (%integer access token,
                                           %string(255) key, %integername data)
%externalintegerfnspec B tree delete entry(%integer access token,
                                           %string(255) key)
%externalintegerfnspec B tree modify entry(%integer access token,
                                           %string(255) key, %integer data)

%externalpredicatespec B tree empty       (%integer access token)

%externalintegerfnspec B tree data value  (%integer access token, site,
                                           %integername size,
                                           %record(*)%name target)
%externalintegerfnspec B tree data replace(%integer access token, site,
                                           %record(*)%name source)
%externalintegerfnspec B tree data insert (%integer access token, size,
                                           %record(*)%name source,
                                           %integername site)
%externalintegerfnspec B tree data delete (%integer access token, site)

%recordformat key list fm(%record(key list fm)%name next,
                          %integer value, %string(255) key)
%externalrecord(key list fm)%mapspec B tree key list(%integer access token,
                                                     %integername status)

%end %of %file