Return the units ("N/mm˛", "m/s", etc) of the value that will be returned by getValue for the given named variable. In order to find the list of valid named variables, use getValueNames Optionally, an UnitSet object (or its name) can be passed to control which system of units (e.g. mm/m/inch) will be used to build the returned string. If not given, the database's current unit system will be used.
| varName | string | name of the value (e.g. "E") |
| units | optional IFUnitSet | unit system to use. If not given, database units will be assumed |
| Return value | string | the returned string |
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