When two `Value`

s are written down in *canonical form*, comparing
their *syntax* for equivalence gives the same result as comparing them
*semantically* according to the equivalence defined in the
Preserves specification.^{1}

That is, canonical forms are equal if and only if the encoded `Value`

s
are equal.

This document specifies canonical form for the Preserves compact binary syntax.

**Annotations.**
Annotations *MUST NOT* be present.

**Sets.**
The elements of a `Set`

*MUST* be serialized sorted in ascending order
by comparing their canonical encoded binary representations.

**Dictionaries.**
The key-value pairs in a `Dictionary`

*MUST* be serialized sorted in
ascending order by comparing the canonical encoded binary
representations of their keys.^{2}

**Other kinds of Value.**
There are no special canonicalization restrictions on

`SignedInteger`

s, `String`

s, `ByteString`

s, `Symbol`

s, `Boolean`

s,
`Float`

s, `Double`

s, `Record`

s, `Sequence`

s, or `Embedded`

s. The
constraints given for these `Value`

s in the specification
suffice to ensure canonicity.-
However, canonical form does

*not*induce a match between lexicographic ordering on syntax and semantic ordering as specified. It*only*induces a connection between equivalences. ↩ -
There is no need to order by (key, value) pair, since a

`Dictionary`

has no duplicate keys. ↩