In declaring your interest in a resume cover letter, you must reference the particular position or job function for which you would like to apply; these are usually described in the employer’s job posting.  If you wish to cast a broader net, you should state your general areas of competency in the cover letter for resume. 

If you think of your resume cover letter as the opening act in a musical performance and the resume itself the headliner, you will have a better sense of the importance of the cover letter for resume as well as its relationship to the actual resume.  The resume cover letter must pave the way for the resume itself.  Therefore, although the cover letter for resume must not be as detailed as the main attraction, it must hint at what is to follow.  The resume cover letter must entice the audience (the potential employer) to stick around for the headliner.

Given the significance of the cover letter for resume, it makes sense not to leave its writing to chance.  As a professional service with a thirty-year history of success, Objective: Resumes has been preparing resume cover letters, both general and targeted, that have assisted applicants in securing interviews leading to more fulfilling careers.