Hi,
For a better clarity on 4.4.4 please see Appendix A 4.4 of ISO-14001.
Just to give you some immediate input see below:
What are the main elements of ISO-14001 ? Policy (4.2), Planning (4.3.1, 4.3.2, 4.3.3), Implementation (4.4.1- 4.4.7), Checking (4.5.1 - 4.5.5) and Reviewing (4.6). It is possible that you have an EMS Manual that describes each one of these main elements with respect to your organization's activities, products and services.
What are the interactions among these elements ? While the environmental policy is the main driver for your system, you also have significant aspects, legal and other requirements and objectives and targets, that are addressed throughout the system. For example, significant aspect may be addressed through an objective, or through training, or through communication, or through a Operational control procedure etc. You will see many such interactions between P, D, C & A throughout the system. Describe these interactions.
If you have documented the above or recorded the results of actions taken or monitored progress etc., they are the related documents referred.
Hope the above helps in your understanding of the extract that you have posted.
With kind regards,
Ramakrishnan