The term 'NEWSLETTER FEATURE' can be solved by the word 'STAPLE', which is a six-letter word. A newsletter feature is a regular part of a newsletter, such as an article, column, or other content that appears in each issue. It is often used to provide readers with information about a particular topic or to highlight a special event. STAPLE features are usually written by the same author or group of authors and are often used to establish a consistent tone and style for the newsletter.