`TMemDataset`
pl	ro	OnDeleteError
pl	ro	OnEditError
pl	ro	OnNewRecord
pl	ro	OnPostError
pl	ro	OnFilterRecord

`TDataSet`
		OnCalcFields
		OnDeleteError
		OnEditError
		OnFilterRecord
		OnNewRecord
		OnPostError

`TComponent`
		OnGetDeltaStreams

`TPersistent`