##### 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.

- On macOS systems, this value has to be cleartext. Beware of security issues.
            - To create a disabled account on Linux systems, set this to C('!') or C('*').
            - To create a disabled account on OpenBSD, set this to C('*************').
            - See U(https://docs.ansible.com/ansible/faq.html#how-do-i-generate-encrypted-passwords-for-the-user-module)
              for details on various ways to generate these password values.
        type: str
    state:
        description:
            - Whether the account should exist or not, taking action if the state is different from what is stated.
        type: str
        choices: [ absent, present ]
        default: present
    create_home:
        description:
            - Unless set to C(no), a home directory will be made for the user
              when the account is created or if the home directory does not exist.
            - Changed from C(createhome) to C(create_home) in Ansible 2.5.
        type: bool
        default: yes
        aliases: [ createhome ]
    move_home:
        description:
            - "If set to C(yes) when used with C(home: ), attempt to move the user's old home
              directory to the specified directory if it isn't there already and the old home exists."
        type: bool
        default: no
    system:
        description:
            - When creating an account C(state=present), setting this to C(yes) makes the user a system account.
            - This setting cannot be changed on existing users.