diff --git a/version3.0/lib/system.nas b/version3.0/lib/system.nas
index 72c7a5a..870d1ad 100644
--- a/version3.0/lib/system.nas
+++ b/version3.0/lib/system.nas
@@ -7,4 +7,8 @@ var sleep=func(duration)
 {
     nasal_call_builtin_sleep(duration);
     return;
+}
+var input=func()
+{
+    return nasal_call_builtin_input();
 }
\ No newline at end of file