Explain a single FME feature flag in plain language: purpose, default rule, and per-environment targeting state, flagging inconsistencies across environments inline. A quick-lookup/explain capability, not a search across many flags - disambiguates when the name/key given is ambiguous. Doesn't create, kill, or modify anything - see update-flag-targeting for targeting changes, manage-flag-lifecycle for metadata/archive, discover-feature-flags for multi-flag questions, manage-experiments for experiments. Trigger phrases: what does this flag do, explain this flag, how is X configured, is X on in prod, what's targeted for X.