& Merge

& holds two fields in one reading long enough for a relation to appear. Both sources stay named. The runtime calls it subject; merge is its public alias.

^"merge_contract"{

Contract

In hand

Overlay or compare fields. Both sources stay readable in the result.

What it means

The mark is a relation, a third thing that lasts only while both fields are still visible. Where they disagree stays part of the relation.

Brace Physics

The brace carries both incoming fields. Agreement and disagreement stay inside the same boundary.

Before and after

Prefix &x primes a unit for integration. Postfix x& marks that the unit remains mergeable after reading.

?["merge_example"]

Example

&surface_notes
&operator_trace
&attention_map

Take this example apart in the parser: each mark becomes a token you can inspect, and the parser says whether the source rebuilds exactly.

~"operator_ring"