Scriptment
1. A scriptment is a written work by a movie or television screenwriter that combines elements of a script and treatment, especially the dialogue elements, which are formatted the same as in a screenplay. It is a more elaborate document than a standard draft treatment. A lengthy scriptment may resemble a script sufficiently to be used as the basis for qualifying the writer to receive or share a screenplay credit, as opposed to just a story credit. Some films have been shot using only a scriptment.
Source: Wikipedia