Index - X
| x0 | Term.Builtin.Convenience |
| x1 | Term.Builtin.Convenience |
| x10 | Term.Builtin.Convenience |
| x2 | Term.Builtin.Convenience |
| x3 | Term.Builtin.Convenience |
| x4 | Term.Builtin.Convenience |
| x5 | Term.Builtin.Convenience |
| x6 | Term.Builtin.Convenience |
| x7 | Term.Builtin.Convenience |
| x8 | Term.Builtin.Convenience |
| x9 | Term.Builtin.Convenience |
| Xor | Term.VTerm, Term.LTerm, Term.Substitution, Term.Unification |
| xorFunSig | Term.VTerm, Term.LTerm, Term.Substitution, Term.Unification |
| xorMaudeSig | Term.Maude.Signature, Term.Unification |
| xorRules | Term.Builtin.Rules |