diff --git a/api/s27_backdrop.py b/api/s27_backdrop.py
index 84d4da6..6509da4 100644
--- a/api/s27_backdrop.py
+++ b/api/s27_backdrop.py
@@ -24,3 +24,19 @@ def set_backdrop_cache(name: str, cs: ChangeSet) -> SqlChangeSet:
 
 def set_backdrop(name: str, cs: ChangeSet) -> ChangeSet:
     return execute_command(name, set_backdrop_cache(name, cs))
+
+
+class InpBackdrop:
+    def __init__(self, section) -> None:
+        self.value = '\n'.join(section)
+
+
+def inp_in_backdrop(section: list[str]) -> ChangeSet:
+    obj = InpBackdrop(section)
+    cs = ChangeSet(g_update_prefix | {'type': 'backdrop', 'content' : obj.value})
+    return cs
+
+
+def inp_out_backdrop(name: str) -> list[str]:
+    obj = str(get_backdrop(name)['content'])
+    return obj.split('\n')
\ No newline at end of file