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### Printing

- `(print-graph [on?])` gets or sets a Boolean value that controls printing S-expressions with sharing. See section 14.5 for more information.
- `(print-struct [on?])` gets or sets a Boolean value that controls printing structure values. See section 14.4 for more information.
- `(print-box [on?])` gets or sets a Boolean value that controls printing box values. See section 14.4 for more information.
- `(print-vector-length [on?])` gets or sets a Boolean value that controls printing vectors. See section 14.4 for more information.