`TFields`
pt		ClearFieldDefs
pt		Changed
pt		CheckfieldKind
pt		GetCount
pt		GetField
pt		SetField
pt		SetFieldIndex
		Create
		Destroy
		Add
		CheckFieldName
		CheckFieldNames
		Clear
		FindField
		FieldByName
		FieldByNumber
		GetEnumerator
		GetFieldNames
		IndexOf
		Remove