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| Report: | General Info | Constrained Elements |
| General Info | |
| Name | range_valid |
| Expression | inv: range <> Void or (years_allowed or months_allowed or weeks_allowed or days_allowed or hours_allowed or minutes_allowed or seconds_allowed or fractional_seconds_allowed) |
| Base Classes | Class |
| Constrained Elements | |
| Name | Type |
| C_DURATION | Class |