Selectors

Every selector:, filter:, and field: value in a CnD spec is a selector expression.

Selectors are written in a restricted subset of the Alloy / Forge relational language — the standard operators (., +, &, -, ^, *, ~, ->) evaluated against the current instance. If you've written Alloy or Forge, selectors will feel familiar.

If a selector doesn't match what you expect, use the Evaluator sidebar tab to run it directly against the current instance.