Workaround for 'use' syntax

Author: EZoni

src/pals/kinds/mixin/all_element_mixin.py

@@ -61,7 +61,14 @@ def unpack_element_list_structure(
                     f"but we got {item!r}"
                 )
             name, fields = list(item.items())[0]
+            # Allow a shorthand usage: `- use: element_name` in examples.
+            # If the value is not a dict but the key is 'use', treat it as
+            # a reference to an existing element name and wrap it in a
+            # PlaceholderName so downstream code can resolve it.
             if not isinstance(fields, dict):
+                if name == "use" and isinstance(fields, str):
+                    new_list.append(PlaceholderName(fields))
+                    continue
                 raise TypeError(
                     f"Value for element key {name!r} must be a dict (the element's properties), "
                     f"but we got {fields!r}"