This is an example of a draft of Form 8913, Credit for Federal Telephone Excise Tax Paid. The location of each transcription (T) line/area is identified by a two-digt Section number followed by a hyphen and the Alpha Field Designator (AFD). The location and description of each Alpha Field Designator is indicated below.20-A - Line 15(d) - Tax Refund20-B - Line 15(e) - Interest on Tax Refund