This publication about application letter and resume writing is the third of a four-part series on developing effective business communication practices. Your cover letter should not be a restatement of the entire resume.Learn the art of crafting personalized, attention-grabbing cover letters that speak directly to a particular person and tailor your qualifications. The resume documents one's qualifications for a position. It is a marketing tool and should be unique in both content and format to highlight facts about. A cover letter usually is three paragraphs long and outlines why you are applying for a specific position, a brief overview of your professional background. Cover Letter: A cover letter is a personalized document that accompanies your resume. It's typically submitted along with your resume in a job application. An application letter, also known as a cover letter, is a document that accompanies your resume when you're applying for a job. Your resume is a snapshot of your professional persona, so it's important that this document speaks to the skills and talents you possess.