One of the requirements of a new accounts management system is that it must allow users to scale the size of text on the screen. The requirement states that the text can be reduced to 10% of normal…

One of the requirements of a new accounts management system is that it must allow users to scale the size of text on the screen. The requirement states that the text can be reduced to 10% of normal size and increased up to 500% of normal size, depending on the preference of the user. What would this requirement be classified as?