paneTitle

Visually distinct portion of a window with window-like semantics are considered panes for accessibility purposes. One example is the content view of a large fragment that is replaced. In order for accessibility services to understand a pane's window-like behavior, panes should have descriptive titles. Views with pane titles produce AccessibilityEvent#TYPE_WINDOW_STATE_CHANGEDs when they appear, disappear, or change title.

See androidx.core.view.ViewCompat.setAccessibilityPaneTitle.