What is the course?
The most common form of communication is written communication. Although confidence and personality may, sometimes, help one get away with incorrect English in spoken communication, written communication is where people can see through you and form perceptions.
In most corporates, perceptions determine how far one can go in his /her career. Therefore, It is important to manage perceptions and hence it is important to write well. A well written document helps to create a good impression, increase your credibility, and even inspire others to action!