| ⇢ | A | FrontendOverlayService added | |
| C | ↗ | A | Relation improved | 
| ⇢ | B | FrontendOverlayService::getUidOfOverlay() added | |
| ⇢ | A | FrontendOverlayService::getOverlayTable() added | |
| ⇢ | A | FrontendOverlayService::getLocalRecordUidFromOverl... added | |
| ⇢ | A | FrontendOverlayService::__construct() added | |
| ⇢ | A | FrontendOverlayService::getRecord() added | |
| ⇢ | A | FrontendOverlayService::getOverlay() added | |
| B | ↛ | Relation::getUidOfRecordOverlay() removed | |
| A | ↛ | Relation::usePagesLanguageOverlayInsteadOfPagesIfP... removed | |
| A | ↛ | Relation::getTranslationOverlay() removed | |
| A | ↛ | Relation::getLocalRecordUidFromOverlay() removed |