writing methods; rules of good writing; writing style guide
Refers to the techniques, conventions, and principles for composing clear and effective written Japanese. Often used in educational contexts or as a book title.
I'm reading books by famous authors to learn writing techniques.
This writing style guide is helpful for writing reports.
作文 refers to the act of composing a piece of writing or the resulting composition itself, while 文章作法 focuses on the methods and rules for writing well.
文体 means literary style or the characteristic way an author writes, whereas 文章作法 is about the practical techniques and guidelines for writing.
Compound of 文章 (writing, composition) and 作法 (manners, rules, etiquette). The term likely emerged in the modern era with the rise of systematic writing instruction.