"Read More" In Place

"Read More" is now in place, so when my posts are longer, I can place the first paragraph or 2 on the main page, and add a link at the bottom for anyone who wants to read more to click and continue. I am surprised this is not a built-in function in Blogger. Users have to write the hack themselves in their templates, which may also mean that whenever I change my template, the changes I have made will be gone, I"ll have to write it again. Not very good.