Writing refers to a type of communication of human knowledge, which is thought to feel. The demand by inheritance through the writing, for example, save the message to write to write the essay, etc.
The author refers to a type of human communication. Demonstrate their knowledge, thoughts, feelings, needs, such as broadcasting through the written notes. Letter Writing Essays, etc.
Writing means a kind of communication of man, which is the display of knowledge, thoughts, feelings, needs by broadcast via the written. The memo, writing letters, essays, etc.