Thank you very much, Esmi.
The link you gave me does help me a lot. But that was for one other item I want to do.
For my original post, I actually wanted something similar to what the wp_pagenavi() offering.
Again, with my above example:
If an article-x-n is being display, at the bottom, I would like to have the navigation links as wp_pagenavi() but for going to the next article in the same subpage.
`Content from article-a-1
prev | 1 | 2 | 3 next’
when the number in ‘prev | 1 | 2 | 3 next’ is clicked, the next article in article-a will be displayed.
Thanks!