Layouts are one of the core elements that allow you to quickly create custom Revit Window families (and soon Revit Door families).
A layout is a container that can be divided in different sections, that can hold other elements like frames, mullions, panels, and even other layouts.
Fix distance / percent
Previously, a layout could be divided either equally or with fix distances between the layout (grid) lines.
With this update, we add support for percentage values, allowing for even more flexibility and control over your layout.
Layout line numbers
Layout lines are numbered from left to right (in horizontal layouts) and from bottom to top (in vertical layouts). In order to get a better visual understanding between the preview and the layout line properties (right panel), we've added the numbers to each layout line when the related layout is selected from the elements explorer (left panel).