| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | window | | | | +----------------+--------------------------------------------------------------+
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | window | | | | +----------------+--------------------------------------------------------------+
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | window | | | | +----------------+--------------------------------------------------------------+