[Riwerry]

Hello guys, please can someone explain me when to use return 1; or return 0; Becouse I dont found any tutorial or something and I understand when to use it. For example why every callback (except OnPlayerCommandText) have return 1? What will happen if i set it to 0; ? And for example when I create new public with forward, how can I know so here should be return 1 or 0?