Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The schema already documents all three parameters completely, including enums, defaults, ranges, and category lists, so the baseline is 3. The description adds marginal value by repeating category options and noting that this-or-that has no categories, but it does not add significant semantic detail beyond the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.