https://doxygen.postgresql.org/structSplitPageLayout.html
PostgreSQL Source Code: SplitPageLayout Struct Reference
source codepostgresqlsplitpagelayoutstructreference
https://primer.style/product/components/split-page-layout/
SplitPageLayout | Primer
SplitPageLayout is a layout component that allows you to create a two-column layout with a main content area and a sidebar.
splitpagelayoutprimer