The LAYOUT file format is a proprietary document format developed by Trimble for use with SketchUp Pro. It is specifically designed for architectural and design professionals to create professional-grade presentation documents, construction drawings, and scaled layouts based on 3D models created in SketchUp. Unlike standard CAD files, a LAYOUT file acts as a bridge between 3D modeling and 2D documentation. It allows users to import SketchUp model viewports, add annotations, dimensions, labels, and title blocks, and arrange them on virtual pages. When the underlying 3D model is updated, the LAYOUT file can automatically reflect those changes, ensuring that documentation remains synchronized with the design. The format supports vector rendering, which ensures that drawings remain crisp and clear regardless of the zoom level or print resolution. It is widely used in the fields of interior design, landscape architecture, and construction planning to produce high-quality documentation packages that include floor plans, elevations, and detailed sections.