Main routine of kin-util program is the parser of the input XML-file with the job instructions. It looks for the job commands and pass their XML-text to the corresponding subroutines. There are two groups of the commands: import/export commands and instructions for computations. Import/Export¹⁾:

CLIStatus importSchema(const XMLElement&, Schema*& schema_ptr);
CLIStatus importSchemaInstance(const XMLElement& elem, SchemaInstance*& instance_ptr);
CLIStatus importInstanceExptlData(const XMLElement& exptl_elem);

CLIStatus doComputation(const XMLElement& calc_elem);
CLIStatus displayResult(const XMLElement&);
CLIStatus optimize(const XMLElement& optimize_elem);

extern std::vector<Schema*> globalSchemaList;
extern std::vector<SchemaInstance*> globalInstanceList;
extern std::map<String, CalculationResult*> globalResultMap;
extern std::map<String, ABCKIN::ExptlDataContainer> globalExptlMap;

CLIStatus is the class which objects depict results of any parsing or calculation subroutine. It declares an Error/Warning ID, textual description of the error and the error context (e.g. an invalid command syntax).