Document argparse.REMAINDER as being equal to "..." #68835

assignee = None
closed_at = <Date 2016-05-30.01:07:55.427>
created_at = <Date 2015-07-16.20:47:25.084>
labels = ['docs']
title = 'Document argparse.REMAINDER as being equal to "..."'
updated_at = <Date 2016-05-30.01:07:55.425>
user = 'https://github.com/anntzer'

activity = <Date 2016-05-30.01:07:55.425>
actor = 'r.david.murray'
assignee = 'docs@python'
closed = True
closed_date = <Date 2016-05-30.01:07:55.427>
closer = 'r.david.murray'
components = ['Documentation']
creation = <Date 2015-07-16.20:47:25.084>
creator = 'Antony.Lee'
dependencies = []
files = []
hgrepos = []
issue_num = 24647
keywords = []
message_count = 3.0
messages = ['246824', '247942', '266656']
nosy_count = 5.0
nosy_names = ['bethard', 'r.david.murray', 'docs@python', 'paul.j3', 'Antony.Lee']
pr_nums = []
priority = 'normal'
resolution = 'rejected'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue24647'
versions = ['Python 2.7', 'Python 3.5', 'Python 3.6']