Use this object to easily print entity predicate goals before, after, or before and after calling them.
Usage: Mark a goal to be printed by prefixing it with an operator. Printing uses a
To print goal before calling it:
To print goal after calling it:
To print goal before and after calling it:
Operators: This hook object uses the standard
+prefix operators and also defines a global
*prefix operator with the same type and priority.