>I've got a problem with the structural index; I will explain it by an example so it will be easier to understand.
>I create an index in the ascending order then I change in my programs this order (from ascending to descending)
>but after this I can't know which kind of order this index had before my change!!!
>So, my question is: there is a way to save or to know the order of my index before change it?

One idea might be to use descriptive tags to tell you what the index is. Like dvar1, avar2, etc., where d=desc, a=ascending. Then use ORDER() to read the tags and have your program determine what to do next...