Is this how dependencies are suppposed to work?

Hi,

In the following snippet I would have expected the output (%o3) to be
[x(y,z)] but it isn't. The documentation is not very clear about what is
supposed to happen.

(%i1) depends(x,y);
(%o1) [x(y)]
(%i2) depends(x,z);
(%o2) [x(z)]
(%i3) dependencies;
(%o3) [x(z)]

Bernard.