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10
features/binary_formats/bjdata.md
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@@ -208,6 +208,16 @@ The library maps BJData types to JSON value types as follows:
The mapping is **complete** in the sense that any BJData value can be converted to a JSON value.
!!! info "Round trips"
A value returned by [`from_bjdata`](../../api/basic_json/from_bjdata.md) can be serialized with
[`to_bjdata`](../../api/basic_json/to_bjdata.md) using any combination of options and parsed back into an equal
value, and serializing that value again with the same options produces the same bytes. The exception is binary
values: they are only written as an optimized binary array (`[$B`) if Draft 3 is enabled and both `use_size` and
`use_type` are set. Otherwise, they are written as arrays of integers and parsed back as such (see the notes on
binary values above), and serializing such an array again may choose different, but equally valid, type markers.
The bytes can then differ, but parsing them again yields the same value.
??? example
```cpp