diff --git a/api/s13_controls.py b/api/s13_controls.py
index 1deda79..6173167 100644
--- a/api/s13_controls.py
+++ b/api/s13_controls.py
@@ -24,3 +24,19 @@ def set_control_cache(name: str, cs: ChangeSet) -> SqlChangeSet:
 
 def set_control(name: str, cs: ChangeSet) -> ChangeSet:
     return execute_command(name, set_control_cache(name, cs))
+
+
+class InpControl:
+    def __init__(self, section) -> None:
+        self.control = '\n'.join(section)
+
+
+def inp_in_control(section: list[str]) -> ChangeSet:
+    obj = InpControl(section)
+    cs = ChangeSet({'operation' : API_UPDATE, 'type': 'control', 'control' : obj.control})
+    return cs
+
+
+def inp_out_control(name: str) -> list[str]:
+    obj = str(get_control(name)['control'])
+    return obj.split('\n')