How to create Multi-tier alias-prefix
How to create Multi-tier alias-prefix
From v.1.2 AceSEF supports Multi-tier menu alias or prefix. It means that you can display URLs like category1/category2/category3/article even if you've added the article just in category3. To do this you should add 2 underlines __ between each category like this:
category1__category2__category3

