Stylistic conventions- if your language does not have a standardised universal form( way everybody speaks it to understand each other), you will need to have one or have a rule to tell people which forms or dialects of your language to use.

• 文体惯例或协定-要是讲尔笃个言话呒拨一个标准化个普遍个形式（同语）个末尔笃就要专门有个人或者有只规矩，告诉别人家，到底用哪里一种形式个方言。