diff --git a/nur_src/v/bs3/fo/Form.php b/nur_src/v/bs3/fo/Form.php
index 1392b61..0761b1d 100644
--- a/nur_src/v/bs3/fo/Form.php
+++ b/nur_src/v/bs3/fo/Form.php
@@ -717,6 +717,24 @@ class Form extends ComponentPrintable implements IParametrable, ArrayAccess, Cou
     vo::write($this->controls);
   }
 
+  function printControl(string $key): void {
+    $params = $this->_prepareControls();
+    if ($key == "") {
+      # submit
+      vo::write($this->submit(null, $this->ppSubmit));
+    } elseif (A::has($this->ppSubmits, $key)) {
+      $submit = $this->ppSubmits[$key];
+      A::replace_n($submit, "id", $key);
+      vo::write($this->submit(null, $submit));
+    } else {
+      $param = A::get($params, $key);
+      if ($param !== null) {
+        [$control, $name] = $this->buildControl($param);
+        vo::write($control);
+      }
+    }
+  }
+
   protected function fixControlParams(?array &$params): void {
   }
   protected function fixControl(Control $control): Control {