diff --git a/nblast-rs/src/lib.rs b/nblast-rs/src/lib.rs
index 65c0aa8..00a8d90 100644
--- a/nblast-rs/src/lib.rs
+++ b/nblast-rs/src/lib.rs
@@ -80,6 +80,7 @@
 //! // Create an arena to hold your neurons with this score function, and
 //! // whether it should scale the dot products by the colinearity value.
 //! let mut arena = NblastArena::new(smat, false);
+//! // if the "parallel" feature is enabled, use e.g. `.with_threads(5)` to set 5 threads for multi-neuron queries
 //!
 //! let mut rng = fastrand::Rng::with_seed(1991);
 //!
diff --git a/spatial_bench/benches/spatial.rs b/spatial_bench/benches/spatial.rs
index 2428f19..ed9f139 100644
--- a/spatial_bench/benches/spatial.rs
+++ b/spatial_bench/benches/spatial.rs
@@ -68,22 +68,28 @@ pub fn bench_queries(c: &mut Criterion) {
     });
 
     let ar = make_arena::<KiddoArena>(points.clone());
-    group.bench_function("kiddo", |b| b.iter(|| {
-        pair_queries(&ar, &pairs);
-        black_box(())
-    }));
+    group.bench_function("kiddo", |b| {
+        b.iter(|| {
+            pair_queries(&ar, &pairs);
+            black_box(())
+        })
+    });
 
     let ar = make_arena::<NaboArena>(points.clone());
-    group.bench_function("nabo", |b| b.iter(|| {
-        pair_queries(&ar, &pairs);
-        black_box(())
-    }));
+    group.bench_function("nabo", |b| {
+        b.iter(|| {
+            pair_queries(&ar, &pairs);
+            black_box(())
+        })
+    });
 
     let ar = make_arena::<RstarArena>(points.clone());
-    group.bench_function("rstar", |b| b.iter(|| {
-        pair_queries(&ar, &pairs);
-        black_box(())
-    }));
+    group.bench_function("rstar", |b| {
+        b.iter(|| {
+            pair_queries(&ar, &pairs);
+            black_box(())
+        })
+    });
 }
 
 criterion_group!(benches, bench_construction, bench_queries);