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-rw-r--r--youtube_dl/options.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/youtube_dl/options.py b/youtube_dl/options.py
index 7d1bbc021..3e4ac03a2 100644
--- a/youtube_dl/options.py
+++ b/youtube_dl/options.py
@@ -676,7 +676,8 @@ def parseOpts(overrideArguments=None):
     filesystem.add_option(
         '-a', '--batch-file',
         dest='batchfile', metavar='FILE',
-        help='File containing URLs to download (\'-\' for stdin)')
+        help="File containing URLs to download ('-' for stdin), one URL per line. "
+             "Lines starting with '#', ';' or ']' are considered as comments and ignored.")
     filesystem.add_option(
         '--id', default=False,
         action='store_true', dest='useid', help='Use only video ID in file name')