Nelson chan is right,only according to the meaning of the sentence. if the meaning is not end, use comma, if it is end,use period,dount,dot in English。
We don't distinguish between regions. even though dialect. dount is dot in English, • means 分隔符,is used between European name and surname, 你好!don`t say 你好•,it`s a typo, ;means 分号,If a goup of sentences is divided into a few parts, when every part is over, use 分号