Make it clear which position you are applying for, in case the organization has advertised many job openings. Fill out application form completely.If questions are not applicable, enter "NA. The purpose of a cover letter is to make a compelling case for yourself as a candidate for a particular job, and it complements what's in your resume. To do this, mention one or two accomplishments that relates directly to the job they're looking to fill. Allpurpose cover letters are helpful for applying to several positions or to bring to job fairs. When you apply for state government jobs in Texas, you may be asked to apply using the official State of. Texas Application. WorkinTexas. The 1st paragraph is the opening, where you identify the purpose of the letter. First things first: A cover letter is a document that you send to introduce yourself when applying for a job or internship.