Final answer:
In a packing list editor, only specimens meeting the specific criteria of the packing list type can be included, ensuring compliance with regulations and guidelines.
Step-by-step explanation:
True to the question, in a packing list editor, typically only those specimens that meet the predetermined criteria of the packing list type can be added to the packing list. This ensures that the items being packed adhere to specific requirements, such as safety regulations, destination rules, or classification guidelines. For instance, if the packing list is for fragile items, only specimens classified as fragile by the system's criteria will be eligible for inclusion in that list.