_corr

Attribute (neutral) Type Description
_manager int Manager, which set the value (read only).
Restriction: This attributes can NOT be queried normally with dpQuery() or dpGetPeriod(). It can however be used in the WHERE-clause of a dpQuery to filter results, together with the "TIMERANGE" keyword.
Restriction: This attribute is only available for NGA.
_stime time Source time
_type int Correction-value type
_user int User, who was logged in, when the value was set (read only)
Restriction: This attributes can NOT be queried normally with dpQuery or dpGetPeriod. It can however be used in the WHERE-clause of a dpQuery to filter results, together with the "TIMERANGE" keyword.
_value var Correction value
_status64 bit64

Correction status. By using the _status64 attribute you can specify a user-defined status for a correction value. CAUTION: Note that there is only ONE STATUS for the original value and correction value (not two separate statuses for the two configs).

How to set the status for a correction value via CONTROL:

main()
{
  dyn_time d;
  time t1,t2,t3;
  t1=makeTime(2016,1,27,11,41,2,883);
  int rc;
  rc=dpSetTimed(t1,"System1:ExampleDP_Arg1.:_corr.._value", 18,
  "System1:ExampleDP_Arg1.:_corr.._status64",
  (bit64)"1000001100000001000000000000001000000000000000000100000100000001");
  DebugN(rc);
}
How to query the status: 
main()
{
  string s;
  dpGet("System1:ExampleDP_Arg1.:_offline.._status64", s);
  DebugN(s);
}