private void updateSubTitle() {

		ProgramSelection selection = liveSelection != null ? liveSelection : currentSelection;
		String selectionInfo = null;
		if (!selection.isEmpty()) {
			long n = selection.getNumAddresses();
			String nString = Long.toString(n);
			if (n == 1) {

				selectionInfo = "(1 address selected)";
			}
			else {
				selectionInfo = '(' + nString + " addresses selected)";
			}

		}
		setSubTitle(selectionInfo);
	}
TODO: Remove or rename this to something that accommodates redirecting writes, e.g., to a
debug target process, particularly for assembly, which may involve code unit modification
after a successful write, reported asynchronously :/ .

@return true if this listing represents a read-only view
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/codebrowser/CodeViewerProvider.java