You will be given a definition of a task first, then some input of the task.
In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.

A pen name , also known as a pseudonym , is a name an author uses in the place of their real name , when they write and publish things .
Output:
A pen name ( " nom de plume " or " literary double " ) is a pseudonym ( or , in some cases , a variant form of a real name ) adopted by an author and printed on the title page or by-line of their works in place of their real name .