**Note**: Conditionally required based on `pageSelection` mode.

**When Required**:
- Only when `pageSelection` is set to `"relative"` (From Attribute mode)
- Inactive/ignored for other pageSelection modes

**Purpose**: Specifies a reference attribute on the embedding page that points to the target page.

**Valid Values**:
- Attribute name of any single-page reference attribute on the embedding page's type
- The dynamic enumeration provider lists available reference attributes at runtime
- Common examples: parent references, related entity references, owner references

**Usage**: Enter the attribute name (e.g., `"cf.cplace.myPlugin.relatedPage"`) of the reference attribute to follow.