Thanks Sergey,

I have asked a wrong question, in fact

I have mytable.dbf with an index on empno.

recn() empno notes amount
1 10000 text1 99.99
2 10000 text2 99.99
3 10000 text3 99.99
4 10000 text4 99.99
5 20000 text5 88.88
6 20000 text6 88.88
7 30000 text7 77.77
8 30000 text8 77.77
9 30000 text9 77.77
10 30000 text10 77.77

to get mytable after using BLANK FIELDS AMOUNT IN the records number 2,3,4,6,8,9,10

and in order to keep only

recn() empno notes amount
1 10000 text1 99.99
2 10000 text2
3 10000 text3
4 10000 text4
5 20000 text5 88.88
6 20000 text6
7 30000 text7 77.77
8 30000 text8
9 30000 text9
10 30000 text10

Please help in coding
Thanks again
PP