Wikipedia:Content forking

A content fork is the creation of multiple separate pieces of content (such as Wikipedia articles or inter-wiki objects) all treating the same subject. Content forks that are created unintentionally result in redundant or conflicting articles and are to be avoided, as the goal of a single source of truth is preferable in most circumstances. On the other hand, as an article grows, editors often create summary-style spin-offs or new, linked articles for related material. This is acceptable, and often encouraged, as a way of making articles clearer and easier to manage. Examples of this might be the cuisine of a particular region forking from an article about the region in general, a filmography forking from an article about an actor or director or a sub-genre of an aspect of culture such as a musical style.

A point of view (POV) fork is a content fork deliberately created to avoid a neutral point of view (including undue weight), often to avoid or highlight negative or positive viewpoints or facts. All POV forks are undesirable on Wikipedia, as they avoid consensus building and therefore violate one of our most important policies.