If you think of "it is clear and concise," you change the meaning of the sentence. Not all applications are writing assignments. They are simple and straightforward. It's easy to write ambiguous long letters; everyone can do it. Therefore, the word "clear and concise" is indispensable to the meaning of the sentence, so they are not quoted with a comma.
Writing business letters needs to be clear and concise. But be aware that your document is not a series of short inconsistent sentences. Remember, "Simple" does not necessarily mean "hard" - you still need to think about your tone and the audience you are writing. Consider the following example. The first version is a weak sentence that emphasized facts not directly related to their views. The second version provides information in a direct way. However, you do not need to be a style expert to know that the first version is diplomatic and respectful, even though it is not that simple.
Strict writing is easy. Since drawings do not contain unnecessary lines or unnecessary parts, it is not possible to include paragraphs that do not contain unnecessary words or unnecessary sentences in sentences. This requires the author not to shorten all sentences, or to avoid all details, but simply to convey each word to deal with the subject in the outline. ES6 was standardized in 2015, but in 2017, developers who avoid using simple arrow functions, implicit return, rest, and propagation operators to write dice-friendly code can It got more. That is more familiar. This is a big mistake. The clean feature of ES6 familiar and familiar is far superior to the alternative function of ES5. Simple code is simple compared to alternative functions of grammar.