The global product attributes management page, is used to organize all your global product attributes.
The select vendor form:

Use the select vendor form to select which attributes to show in the global product attributes list. Leave the selection at “All”, if you want to see all global product attributes.
The global product attributes list:

The global product attributes list, shows information about all current global product attributes. It shows information like the attribute’s internal ID, the name and type of the attribute, the vendor and vendor ID of the attribute, or if it is a global attribute, the priority of the attribute and if it is currently active and visible at the product’s details page.
The following global attribute types are currently available:
The list is sorted by vendor ID and name.
The global product attributes list allows you to bulk change the priority and if the attribute is visible or not. Select the desired options and click on the “Save Changes” button to save the changes to the global attributes.
Additional options are available through the action icons on the right side of each item in the list. Click on the edit icon, to open the selected global attribute’s details page. Click on the delete icon, to delete the selected global attribute.
Clicking on any item in the list will open the selected global attribute’s details page.
Click on the “Create New Attribute” button to open the global attribute’s details page to create a new global product attribute.