Update docstring for curl_flag=True case
@@ -684,7 +684,9 @@ class ObservationsClass(MastQueryWithLogin):
all files into download_dir without subdirectories. Or if set to True and
download_dir is not specified, it will put files in the current directory,
again with no subdirs. The default of False puts files into the standard
- directory structure of "mastDownload/<obs_collection>/<obs_id>/".
+ directory structure of "mastDownload/<obs_collection>/<obs_id>/". If
+ curl_flag=True, the flat flag has no effect, as astroquery does not control
+ how MAST generates the curl download script.
cache : bool, optional
Default is True. If file is found on disc it will not be downloaded again.
Note: has no affect when downloading curl script.
