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Lists the labels associated to the test units in the current test module and exits (no test is run).
| ![[Tip]](../../../../../../../doc/src/images/tip.png) | Tip | 
|---|---|
| See this section for more details on labels and logical grouping of test cases. | 
Boolean with default value no.
--list_labels[=<boolean
              value>]
            BOOST_TEST_LIST_LABELS
          The previous example from --list_content
          gives
        
> ./boost_runtime_list_content --list_labels Available labels: label1 label2