`TPDFArray`
		ElementType
		GetDescription
		IsIntegerAt
		IsFloatAt
		IsKeywordAt
		GetIntegerAt
		GetFloatAt

`TPDFContainer`
pt		Replace
		Create
		OwnsObjects
		ElementType
		destroy
		GetEnumerator
		Add

`TPDFObject`
		Create
		ElementType
		GetEnumerator
		GetDescription