A position indicator, comprising: a first transmission unit; a second transmission unit; a reception unit (6, 422) configured to receive information from a position detection system, wherein the information is information for specifying a configuration type of the position indicator; means for generating a position detecting signal; additional information generation means for generating a plurality of types of additional information whose types are different from each other; and control means configured to: determine the configuration type of the position indicator based on the information received by the reception unit (6, 422), control, based on the determined configuration type of the position indicator, sending out of the position detecting signal through the first transmission unit to the position detection system, and control, based on the determined configuration type of the position indicator, sending out of the additional information generated by the additional information generation means from the first transmission unit or the second transmission unit, wherein controlling of the sending out of the additional information includes controlling, based on the determined configuration type of the position indicator, whether or not each of the plurality of types of additional information is to be sent out from the first transmission unit or the second transmission unit. a first transmission unit; a second transmission unit; a reception unit (6, 422) configured to receive information from a position detection system, wherein the information is information for specifying a configuration type of the position indicator; means for generating a position detecting signal; additional information generation means for generating a plurality of types of additional information whose types are different from each other; and control means configured to: determine the configuration type of the position indicator based on the information received by the reception unit (6, 422), control, based on the determined configuration type of the position indicator, sending out of the position detecting signal through the first transmission unit to the position detection system, and control, based on the determined configuration type of the position indicator, sending out of the additional information generated by the additional information generation means from the first transmission unit or the second transmission unit, determine the configuration type of the position indicator based on the information received by the reception unit (6, 422), control, based on the determined configuration type of the position indicator, sending out of the position detecting signal through the first transmission unit to the position detection system, and control, based on the determined configuration type of the position indicator, sending out of the additional information generated by the additional information generation means from the first transmission unit or the second transmission unit, wherein controlling of the sending out of the additional information includes controlling, based on the determined configuration type of the position indicator, whether or not each of the plurality of types of additional information is to be sent out from the first transmission unit or the second transmission unit.