FOLLOWING: Abbreviated as a sub, subscript refers to words or character that are half the height of a standard character and printed LOWER than the rest of the text. In computer programming, a subscript is a NUMBER representing an element in an array. To create subscript in Microsoft Word, highlight the text you want to subscript and then click the subscript button, which is the X2 option in the Font section.You can also highlight the text you want to subscript, PRESS and hold down the Ctrl KEY, and press the = (equal sign).