>surface_operator
project
render
encounter
Spw Operator
> Surface
> projects the same structure into another room, and the source remains the place it came from. The runtime calls it concept-edge; surface is its public alias.
Contract
In hand
Enter the projection, or inspect it. The way back to the source stays recoverable.
What it means
The mark is the same structure standing forth in another room. The way back is how the likeness shows itself.
Brace Physics
The brace discharges into the other room. The path back to the source stays on the boundary.
Before and after
Prefix >x projects the next unit outward. Postfix x> marks that a unit has become visible as surface.
Example
>reading_card
>operator_atlas
>lsp_projection
Take this example apart in the parser: each mark becomes a token you can inspect, and the parser says whether the source rebuilds exactly.