Share Email Facebook Twitter LinkedIn Model Lines Use model lines to create 3D lines that are part of the design. Architecture tabModel panel (Model Line) Topics in this section About Model Lines Model lines are work plane-based elements that exist in 3D space and are visible in all views. Place a Model Line Use the Model Line tool to add a 3D line to the design. Convert Line Types Use the Convert Lines tool to change a line to a model line, a detail line, or a symbolic line. Model Line Instance Properties Modify instance properties to change an individual model line's work plane, line style, and more. Parent topic: Architectural Design