If the array is multidimensional, you must specify a subscript for each dimension. For example, MD identifies an element in a three-dimensional array called MD.
Different programming languages have different rules for specifying subscripts. For example, the BASIC language uses parentheses in place of brackets.
(2) In word processing, a character that appears slightly below the line, as in this example: H20. A superscript is a character that appears slightly above the line.