The zero-width space, abbreviated ZWSP, is a non-printing character used in computerized typesetting to indicate word boundaries​ to text processing systems when using scripts that do not use explicit spacing, or after characters (such as the slash) that are not followed by a visible space but after which there may nevertheless be a line break.

The zero-width space, abbreviated ZWSP, is a non-printing character used in computerized typesetting to indicate word boundaries to text processing systems when using scripts that do not use explicit spacing, or after characters (such as the slash) that are not followed by a visible space but after which there may nevertheless be a line break.