diff --git a/app-proto/Cargo.toml b/app-proto/Cargo.toml
index 3814c38..38205a7 100644
--- a/app-proto/Cargo.toml
+++ b/app-proto/Cargo.toml
@@ -6,7 +6,7 @@ edition = "2021"
 
 [features]
 default = ["console_error_panic_hook"]
-irisawa = []
+dev = []
 
 [dependencies]
 itertools = "0.13.0"
@@ -42,7 +42,7 @@ features = [
 #   https://github.com/rust-lang/cargo/issues/2911#issuecomment-1483256987
 #
 [dev-dependencies]
-dyna3 = { path = ".", default-features = false, features = ["irisawa"] }
+dyna3 = { path = ".", default-features = false, features = ["dev"] }
 wasm-bindgen-test = "0.3.34"
 
 [profile.release]
diff --git a/app-proto/src/engine.rs b/app-proto/src/engine.rs
index d41a6dd..285a9c6 100644
--- a/app-proto/src/engine.rs
+++ b/app-proto/src/engine.rs
@@ -4,9 +4,7 @@ use web_sys::{console, wasm_bindgen::JsValue}; /* DEBUG */
 
 // --- elements ---
 
-/* KLUDGE */
-// temporarily remove test gate so we can use `point` in examples
-/* #[cfg(test)] */
+#[cfg(feature = "dev")]
 pub fn point(x: f64, y: f64, z: f64) -> DVector<f64> {
     DVector::from_column_slice(&[x, y, z, 0.5, 0.5*(x*x + y*y + z*z)])
 }
@@ -287,7 +285,7 @@ pub fn realize_gram(
 //   "Japan's 'Wasan' Mathematical Tradition", by Abe Haruki
 //   https://www.nippon.com/en/japan-topics/c12801/
 //
-#[cfg(feature = "irisawa")]
+#[cfg(feature = "dev")]
 pub mod irisawa {
     use std::{array, f64::consts::PI};