It ACTS as a criterion which restricts the official document writing in every aspect, such as materials selecting, structure organizing, Linguistic expressing, etc.

它像准绳一样制约着公文写作的选材、结构、语言表达等各个方面。

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The document also encourages the use of locally-sourced building materials, rather than bringing it in from elsewhere, when repairs are made to historic sites.

BBC: Traditional skills 'being lost' in Highlands