Line Break - Postfix Numeric

Postfix Numeric is a line break class that applies to numeric characters, such as digits and certain number symbols, when they appear after a base character or prefix in a sequence. This value indicates that a line break is not allowed between the preceding character and the following numeric item, but a break is permitted after the numeric item itself. For example, in a string like “item 5”, the space before “5” is breakable, yet “5” cannot be separated from a following unit, such as in “5kg”, where the digit and “kg” stay together. This rule helps maintain the integrity of numeric expressions, percentages, and measurements, ensuring that values do not get orphaned or split awkwardly across lines, while still allowing flexibility before the number begins.