What actions can be performed on the signup forms saved in the library?

What actions can be performed on the signup forms saved in the library?

When you mouse over the thumbnail of a template stored in the library, you can see the following icons,
  1. Detail view: Displays the details of the sign-up form.
  2. Create Signup Form: Click here to create a sign-up form in the Signup Form section of the Subscribers module.
  3. Edit: Edit the sign-up form.
  4. Clone : Clone the sign-up form. 
  5. Delete: Delete the sign-up form.