Reading Options-

Hello- When logged in as site Adminstrator, when I check the box under “Reading Options” that says For Each Article Show “SUMMARY,” this seemingly has no effect. No matter how many lines the post consists of, the entire text, not the summary is displayed. My blog will be used by prospective writers who want to showcase examples of their work, and many posts will be fairly long. How can I get a simple summary, eg. perhaps the first ten lines of a post to display on the main page, followed by a link to the rest of the post?
Thank You!!!
DB~