The job title will be used to make the cover letter more specfic and relevant for the position you are applying to.

The job description for the job you are applying to. It can simply be a copy paste from a job search site.

The compnay descriptin will be used to include contexctual information to your cover letter.

Details on your experience will help create a more tailored cover letter. This can include years of experience, relevant specific skills or professional certifications or and past work experiences and roles.

Your full name may be used in the text of the cover letter, but can be left blank.

The company name offering the job may be used in the text of the cover letter, but can be left blank.