`TtiFieldAbs`
pt		Clear
pt		SetValue
pt		SetAsString
pt		GetAsString
pt		GetFieldName
pt		SetFieldName
		Create
		IsValidValue
		Equals
		Assign

`TtiBaseObject`
pt		QueryInterface
pt		_AddRef
pt		_Release
		CreateWithRefCounting
		AfterConstruction
		BeforeDestruction
		NewInstance
		TestValid