See: <a href="/doc/reference/classes/ucalc.errorinfo/addhandler/">AddHandler</a>, <a href="/doc/reference/classes/ucalc/error-=-[errorinfo]/">Error = [ErrorInfo]</a>, <a href="/doc/concepts/error-handling-and-control-flow/">Error handling and control flow</a>, <a href="/doc/reference/enums/errorcode/">ErrorCode</a>, <a href="/doc/reference/enums/errorhandlerresponse/">ErrorHandlerResponse</a>, <a href="/doc/tutorials/getting-started:-the-expression-parser/handling-errors/">Handling Errors</a>, <a href="/doc/reference/classes/ucalc.errorinfo/response-=-[errorhandlerresponse]/">Response = [ErrorHandlerResponse]</a>