The Orion account number of the owner of the definition.
Of the form OrionAcctnnnnnn for Orion license holders or AtHomeAcctnnnnnn for Athena at Home users. Where nnnnnn is the account number. For example OrionAcct001234.
The Reconfigurable Rulebook and functionality will be implemented with the release of Orion Scoring System v. 3.0 (TBA)