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| _References and Visibility_ | |
| # Hidden Fields | |
| A non-quoted field name that starts with an underscore (`_`) is not | |
| emitted from the output. | |
| To includes fields in the configuration that start with an underscore | |
| put them in quotes. | |
| Quoted and non-quoted fields share the same namespace unless they start | |
| with an underscore. | |
| <!-- CUE editor --> | |
| ``` | |
| "_foo": 2 | |
| _foo: 3 | |
| foo: 4 | |
| ``` | |
| <!-- result --> | |
| ``` | |
| "_foo": 2 | |
| foo: 4 | |
| ``` |