Final answer:
The opening on antiembolic stockings is positioned over the largest part of the calf or thigh to allow medical checks without removing the stocking.
Step-by-step explanation:
The opening on antiembolic stockings, also known as graduated compression stockings, goes on the top of the stocking. This hole is usually positioned over the largest part of the calf muscle or on the thigh, if it is a thigh-length stocking. The purpose of this opening is to allow healthcare professionals to check the skin and circulation of the limb without needing to remove the stocking completely. It's important for the opening to be properly positioned to ensure that the stockings provide the correct level of compression and to prevent any complications such as skin breakdown or improper circulation.