K1 data entry

1) There are zero amounts for several boxes on my K1, but explanatory letters are provided.  When entering information for Turbotax do I leave the box blank or enter the letter with a zero amount

 

2) I believe IRA and Keogh and medical insurance deductions are entered in box 13.  Is this correct?  If so, what is the code? If not, where is the data entered?