How do people add in "NEXT" "PREV" buttons in wordpress?

Hi sites like www.teensdigest.com, www.issued.tv www.somindblasting.com all have articles with multiple pages and text all with a NEXT button leading to the next page of that particular article. I cannot for the life of me figure a way to do this in wordpress. does anyone know ? i would be very very grateful if someone could help thanks guys

It's a custom coding from the looks of it. You would have to find a plugin that does it or just copy the code and paste it into your theme source code.

Everything you need to know is right here including array arguments...

I'm trying to do the same thing. Is there a plugin that does this?

It's already setup in wordpress. You don't need a plugin. If you want to change the way it lays out multiple page posts, then you'd just modify the array and place it in functions.php instead of a plugin

use after each picture in your post...if you want it to show only next /prev buttons, then you would need to modify the arguments in the array which you could place in functions.php in your theme.

You can find out more info by reading this page
You can extend an article out many pages using this feature of WordPress