Testing ‘After the jump’ summaries in blogger

I just want to test the new features in blogger.
The ‘After the jump’ summaries. Where you write part of article and and the rest after reader click the 'Read more >' logo like the example below

This feature is most useful for blogger that write long text articles.
WordPress implemented this for a long time.
I post mostly pictures and rarely more than a few line, so this doesn't apply to me.
Anyway, I just enable this new enhancement in my blog.

Please look what is the one that posted below-

This is the rest of the post that came after "READ MORE"
Ha,ha!.. Now I have something that can surprise reader..