diff --git a/lib/specs.ts b/lib/specs.ts
index e7abe55..f393eb8 100644
--- a/lib/specs.ts
+++ b/lib/specs.ts
@@ -4,7 +4,7 @@ import * as colors from "./colors";
import { pathToShapes } from "./path";
import type { SvgSymbolElement } from "./vocabulary";
-const SPEC_LAYER_ID_RE = /^arrows.*/i;
+const SPEC_LAYER_ID_RE = /^specs.*/i;
export type PointWithNormal = {
point: Point;
diff --git a/svg/Antler.svg b/svg/Antler.svg
index b3c106a..16a546b 100644
--- a/svg/Antler.svg
+++ b/svg/Antler.svg
@@ -3,6 +3,18 @@
diff --git a/svg/Bicycle.svg b/svg/Bicycle.svg
deleted file mode 100644
index b8e3059..0000000
--- a/svg/Bicycle.svg
+++ /dev/null
@@ -1,8 +0,0 @@
-
-
-
-
diff --git a/svg/Bone.svg b/svg/Bone.svg
index 502df3c..923afda 100644
--- a/svg/Bone.svg
+++ b/svg/Bone.svg
@@ -1,9 +1,22 @@
-