Space properties may not only be defined on the homepage of a space, but also on pages references by the space-properties-extension property.
This feature only applies to space homepages. The property has no special meaning on other pages.
This feature is essential for the metadata extension. This extension allows to import metadata whose content can be activated by this property.
Users add a link to the page that provides additional space properties. Note that defined properties cannot be overridden. The order of the references to documents is important. The first location a value for a property is found, defines the value to the property. If you want to define a property with a special value, define it on the space homepage.
