Final answer:
The document described is a proposal that includes a preface, introduction, glossary, user requirements, system architecture, and models.
Step-by-step explanation:
The document described in the question is commonly referred to as a proposal. A proposal is a written plan or suggestion that outlines the details of a project or idea.
It typically includes a preface, introduction, glossary, user requirements, system architecture, and models.
For example, in software development, a proposal document may include an introduction to the project, a glossary of terms used in the document, detailed user requirements, the system architecture, and various models such as use case diagrams or data flow diagrams.