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compound(?Term)
Succeeds if Term is of type compound, i.e.  a structure or a list.
- Term
- Prolog term.
Description
Used to test whether Term is a compound term.
	Compound terms have an arity greater than zero.
	This test is the negation of atomic/1.
Modes and Determinism
Fail Conditions
Fails if Term is not a compound term
Examples
   Success:
   compound(f(1,2)).
   compound(f(_,_)).
   compound([1,2,3]).
   compound(.(1,2)).
   compound(f/1).
   compound(1+2).
   compound(1+2).
   Fail:
   compound("f(1,2)").
   compound(Term).
   compound(atom).
See Also
atom / 1, atomic / 1, callable / 1, is_list / 1, is_array / 1, var / 1