The most important are tags for attachments since these are also used for the applicant mask on the career page.
Similar to the application fields, you can save different attachments for each job opening for the same candidate if you choose the latter.
Most important are attachment tags, as they can be also used for the application form on your career site. There are two different types of attachment tags: For candidate or for a candidate in a specific job opening. Same as for candidate fields, you can store different attachments per job opening for the same candidate if you use the attachment tag for a candidate in a specific job opening.