I am using Mathematica 9. In the Help help file is the built-in function Backtrack.
In order to use it the Help file says: To use Backtrack, you first need to load the Combinatorica Package using
Needs["Combinatorica`"]. However, when I try to do this I get
General::compat: Combinatorica Graph and Permutations functionality has been superseded by preloaded functionality. The package now being loaded may conflict with this. Please see the Compatibility Guide for details.
The "Compatibility Guide" doesn't seem to help. Can someone tell me exactly what is going on here?