These steps describe the full block format, in which all lines start at the left.
这些步骤描绘了主题结构的格式，所有文字行都从左边开始。
The first restriction is the actual format, which must be a single statement or block.
第一项限制是使用的格式，它必须是单条语句或者块。
The format of a restructured block is rather simple
重新构造的块的格式相当简单
The format of a restructured block is rather simple
重新构造的块的格式相当简单
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