它们只包含一个经过注释的命令列表，没有任何分支和循环。
They consist of nothing more than a commented list of commands with no branches or loops.
设计形式良好的循环嵌套和流程片断分支，将是降低出现建模错误的可能性的有效方式。
A well-formed nesting of cyclic and branching process fragments is a good approach to reduce the possibility of modeling errors.
这种形态不包括常规形态中常见的循环、条件和分支。
This form does not include the loops, conditions, or branches found in the generic form.
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