Borders made with different widths of fabric (usually called stacked or striped borders) are great; just add the last piece to make the border fit exactly.

this is good... borders are difficult to make fit.

Ive never heard. Of that. Any pics? Don't understand how it fits.

Honestly, I'm not sure what it means. I was hoping someone would elaborate.

I think it might be referring to a piano key border. Here's a link to one I made.

http://www.quiltingboard.com/t-34242-1.htm