Describe the case when we append a line to a file in the files.line operation
@@ -184,6 +184,10 @@ def line(
date (taken from the machine running ``pyinfra``) appended as the extension. If
you pass a string value this will be used as the extension of the backed up file.
+ Append:
+ If ``line`` is not in the file but we want it (``present`` set to ``True``), then
+ it will be append to the end of the file.
+
Examples:
.. code:: python
