diff --git a/characters b/characters
index 83d65050..d282d23c 100644
--- a/characters
+++ b/characters
@@ -247,6 +247,9 @@ _mn
 =
 _eq
 3
+:
+_co
+1
 ;
 _sm
 1
@@ -277,3 +280,4 @@ _vb
 .
 _dt
 1
+
diff --git a/sounds/homedecor_gate_open_close.ogg b/sounds/homedecor_gate_open_close.ogg
index 5b26d338..e4dca3af 100644
Binary files a/sounds/homedecor_gate_open_close.ogg and b/sounds/homedecor_gate_open_close.ogg differ
diff --git a/textures/_co.png b/textures/_co.png
new file mode 100644
index 00000000..ae97df03
Binary files /dev/null and b/textures/_co.png differ
diff --git a/textures/_sm.png b/textures/_sm.png
index 67b1385d..d6e4ab06 100644
Binary files a/textures/_sm.png and b/textures/_sm.png differ