Background
...
hidden-top
page-top
detached-banner (only shown when detached window state is used)
pre-header (uP4)
eyebrow (uP5+)
header-top (not yet implemented)
header-left
header-right
- header-bottom
- nav
customize
- mezzanine (uPortal 5.0+)
sidebar-left
- pre-content
content (in a layout file do not specify a folder with type="content", folders of type="regular" are placed in this region due to historic use of type="regular" for tab content)
post-content
sidebar-right
footer-first
footer-second
page-bottom
hidden-bottom
...