diff --git a/std/string/array2null.lb b/std/string/array2null.lb
new file mode 100644
index 0000000..59833e2
--- /dev/null
+++ b/std/string/array2null.lb
@@ -0,0 +1,7 @@
+@ 0
+ args 0
+ size
+ #exec std/rev.lb
+ push 0
+ size
+ #exec std/rev.lb
diff --git a/std/string/null/print.lb b/std/string/null/print.lb
new file mode 100644
index 0000000..bc2688b
--- /dev/null
+++ b/std/string/null/print.lb
@@ -0,0 +1,9 @@
+@ 0
+ args 1
+ dup
+ jz 1
+ putc
+ jmp 0
+
+@ 1
+ quit