diff --git a/README.md b/README.md
index 19b3e14..325c454 100644
--- a/README.md
+++ b/README.md
@@ -1239,9 +1239,8 @@ the Development section below, and who ships a register the four above then draw
 - **`misc` is what every locale shares.** A category whose facts differ by country
   belongs in that country's locale, read from the register that country's own
   records use; `misc` takes only sources that are international. NHTSA vPIC and
-  Mobility Sweden's registrations are national, so they build `en_US.car` and
-  `sv_SE.car`; `misc.car` waits for an international source rather than take one
-  of theirs.
+  Mobility Sweden's registrations are national, so they are for `en_US.car` and
+  `sv_SE.car`, and `misc.car` waits for an international source.
 - **A register's canonical spelling loses to the one its domain writes.** Where a
   source offers several spellings of one fact, the shipped one is what records in
   that domain carry. `misc.timezone` reads `zone.tab` and not the `zone1970.tab`
diff --git a/compose.yaml b/compose.yaml
index 7bdfd06..86595e4 100644
--- a/compose.yaml
+++ b/compose.yaml
@@ -4,8 +4,8 @@
 #   docker compose run --rm vet
 #   docker compose run --rm build
 #
-# The full gate — vet, formatting and tests — is `docker build .`, which is what
-# CI runs.
+# The full gate — vet, formatting, cyclomatic complexity and tests — is
+# `docker build .`, which is what CI runs.
 #
 # Build caches persist in the `gocache` volume, so re-runs are fast and the
 # host tree stays clean. Commands that rewrite source (fmt, tidy) keep your
diff --git a/template.go b/template.go
index f7862dc..c92edd5 100644
--- a/template.go
+++ b/template.go
@@ -60,8 +60,8 @@ func eachToken(format string, fn func(ftoken) error) error {
 // builtin is a format-string function invoked as {name(args)}. It receives the
 // session (its rng, and the {seq()} counters), the output emitted so far in the
 // current expansion (for derivations such as a checksum over preceding digits), and
-// the values of the operands it named (only calc names any). All must stay pure
-// over (rng, emitted, args) so seeded output is reproducible; seq advances
+// the values of the operands it named (calc and the transforms name them). All must
+// stay pure over (rng, emitted, args) so seeded output is reproducible; seq advances
 // per-session counter state, which is itself deterministic. arity is the exact arg
 // count, or -1 for variadic (then check does all the validation).
 type builtin struct {
@@ -121,7 +121,8 @@ func plural(n int) string {
 
 // checkFunc validates a function token at compile time: well-formed, naming a
 // known builtin, with the arg count that builtin takes and args its check accepts.
-// fields is passed through for the one builtin (calc) that validates against them.
+// fields is passed through for the builtins (calc, the transforms) that validate
+// against them.
 func checkFunc(body string, fields map[string]node) error {
 	name, args, ok := funcCall(body)
 	if !ok {