We are using cut and an index. You got to know that cut is for, because it could be moved around as people are iner inserting data. But iat, you have to know the index of that column. So without it would be like row and then column name. Or iat is row, column number. It's probably less flexible. Ag, sort as an aggregation. Thi one just returns the indices that would sport a data frame. Oe based on some column. And pring to the 20 fifth with a int. Grop b m ye.