The provided text explains the concept of a pen name, also known as a nom de plume. A pen name is an alias adopted by a writer. Authors might choose to use one for several strategic purposes. These can include making their name more memorable or distinctive, concealing their gender, separating different types of their literary output, or safeguarding themselves from potential backlash due to their writings. Additionally, a pen name can be employed to present multiple authors as a single entity or for other reasons tied to the promotion or artistic presentation of their work. The true identity of the author behind the pen name might remain known only to their publisher, or it could eventually become public knowledge.