If set to true, variables read in from config files will overwrite each other. Otherwise, the variables will be pushed onto an array. This is helpful if you want to store arrays of data in config files, just list each element multiple times. true by default.
如果此變數的值為 true 的話,則從組態檔寫入讀出的值將會互相影響。不為 true 的話,則變數會被寫到陣列中,如果你想將陣列的資料存到組態檔時將是對你有幫助的, 只要多次列出每個元素。在預設狀況下此變數的值是 ture。