Parent groups are used for recursive hierarchies 父組用于遞歸的層次結(jié)構(gòu)。
Optional if this group is a recursive hierarchy , for parent group , type or select an expression to use as the recursive group parent (可選)如果此組是遞歸層次結(jié)構(gòu),則對(duì)于“父組” ,請(qǐng)鍵入或選擇要用作遞歸組的父組的表達(dá)式。