Online Correction with or without Digital Signature

There is confusion for deductor what can he do with or without digital signature for online correction for the period 2013-14 onwards or prior to 2013-14.  The below picture clear everything for deductor.  Some corrections like Modify /Add Deductee Rows and Delete / Add Salary Deductee rows can be done only for the period 2013-14 onwards with Digital Signature. Means Prior to 2013-14  the same can not be done with digital signature.

Deductors are requested to check below screen before taking any action for TDS return online correction which will be helpful for him

Type of Correction                  Online Online Online Online 
Year 2013-14 onwards Prior to 2013-14 2013-14 onwards Prior to 2013-14
Digital Siganture                   Yes Yes            No No
Default Summary View           Yes Yes            Yes Yes
Personal Information                   Yes Yes            No No
Challan Correction (unmatached,matched) +deductee movement
                                                Yes           Yes    Yes Yes
Pan Correction (Annex. 1) Yes           No            No No
Pan Correction (Annex. 2) Yes          No            No No
Add Challan to statement         Yes          Yes            Yes Yes
Interest , Levy Payment         Yes          Yes            Yes Yes
Modify /Add deductee rows Yes          No            No No
Del / Add Sal. deductee rows   Yes          No             No No