A PARTIAL map from one closed key vocabulary to one closed value vocabulary — the value an
"override per case" field carries (the processing view's arrangement pinned per screen
class, 2026-08-04-processing-view-layout.md §5).
Partial on purpose: an absent key means NOTHING IS PINNED there, which is a different fact
from any value the vocabulary could name. The empty map is the shipped value, not an error.
An unknown key is REFUSED rather than dropped, for the reason the patch codecs refuse one:
a pin the desk silently discards reads back as applied and the operator never learns their
spelling was wrong. The refusal names the offending key in at.
A PARTIAL map from one closed key vocabulary to one closed value vocabulary — the value an "override per case" field carries (the processing view's arrangement pinned per screen class,
2026-08-04-processing-view-layout.md§5).Partial on purpose: an absent key means NOTHING IS PINNED there, which is a different fact from any value the vocabulary could name. The empty map is the shipped value, not an error.
An unknown key is REFUSED rather than dropped, for the reason the patch codecs refuse one: a pin the desk silently discards reads back as applied and the operator never learns their spelling was wrong. The refusal names the offending key in
at.