Now I export the public key
I click on "Export Public Part".
A dialog opens for the selction of the target folder.
I select a folder, which I'll be able to find again later in my file manager and click "open" in the selection dialog.
Subsequently Academic Signature will store the public key with file extension ".pell" in the selected folder.
This file is my public key.
I hand out this file to all my potential communication partners or publish it in on my homepage.