In a business letter to the same rules of writing, as in normal: write clearly, concisely and courteously; Think about the addressee, the purpose of writing a letter, clarity, clarity and tone.
Encwadini yebhizinisi nemithetho efanayo lokubhala, njengoba evamile: ukubhala ngokucacile, ngamafuphi futhi ngomusa; Cabanga mayelana nola, inhloso ngokubhala incwadi, ukucaciseleka, ecacile futhi tone.