##### SUMMARY
The documentation of the module *user* / parameter *shell* states:

https://github.com/ansible/ansible/blob/8edad83ae029d7838a6d6347576d2ddbcce12ad0/lib/ansible/modules/system/user.py#L79

But there are no (shell specific) notes.
##### ISSUE TYPE
- Documentation Report

##### COMPONENT NAME
user / docs

##### ANSIBLE VERSION
devel branch

##### CONFIGURATION
N/A

##### OS / ENVIRONMENT
N/A

##### ADDITIONAL INFORMATION
Either remove the sentence or provide some information in the notes section.

if self.local:
            if not os.path.exists(self.PASSWORDFILE):
                self.module.fail_json(msg="'local: true' specified but unable to find local account file {0} to parse.".format(self.PASSWORDFILE))
            exists = False
            name_test = '{0}:'.format(self.name)
            with open(self.PASSWORDFILE, 'rb') as f:
                reversed_lines = f.readlines()[::-1]
                for line in reversed_lines:
                    if line.startswith(to_bytes(name_test)):
                        exists = True
                        break
            if not exists:
                self.module.warn(
                    "'local: true' specified and user '{name}' was not found in {file}. "
                    "The local user account may already exist if the local account database exists "
                    "somewhere other than {file}.".format(file=self.PASSWORDFILE, name=self.name))
            return exists
        else:
            try:
                if pwd.getpwnam(self.name):
                    return True
            except KeyError:
                return False
    def get_pwd_info(self):