Literature in the twenty-first century is computational. Almost all print books are digital files before they become books; this is the form in which they are composed, edited, composited, and sent to the computerized machines that produce them as books. They should, then, properly be considered as electronic texts for which print is the output form. The computational nature of twenty-first century literature is most evident, however, in electronic literature, literature that is “digital born,” created on a computer and meant to be read on it. More than being marked by digitality, such works are actively formed by it. For those of us interested in the present state of literature and where it might be going, electronic literature raises complex, diverse, and compelling issues.