As a parameter in syntax:
"Row" is an integer value that indicates a row number from 1 to the total number of rows in the screen or window
"Rows" (not to be confused with "row") is an integer constant which indicates the maximum size for the first dimension of an array.
In Grids and Lists, ROW is a READ type that reads all cells in the specified rows.
FINE GRAIN FIELD POSITIONING
As of 4.30, ROW/COL and ROWS/COLS in FIELDS operations may be expressed as decimal fractions.