73af6f5e_nguage_testing___Scales_Levels__Proficiency
[Level] 4+ [Definition] Able to write the language precisely and accurately in a wide variety of prose styles pertinent to a variety of audiences and professional needs. Varied use of stylistic devices and flexibility within a style. Can both write and edit formal and informal correspondence, official reports and documents, and professional articles, including writing for special purposes which might include legal, technical, educational, literary and colloquial writing. The writer employs a very wide range of stylistic devices. [Proficiency] 
Advanced Professional Proficiency, Plus
Language testing - Scales/Levels