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##### SUMMARY
Please update the documentation for the Setup module to include a note to check the Delegated Facts (https://docs.ansible.com/ansible/latest/user_guide/playbooks_delegation.html#delegated-facts) documentation. I spent a long time trying to figure out how to set just the required facts for a group of servers remote servers and it was simple once I found the right document.
Or better yet, include the example from the Delegated Facts in the Examples section of the Setup module.

##### ISSUE TYPE
- Documentation Report

##### COMPONENT NAME
Setup module

##### ANSIBLE VERSION
N/A
##### CONFIGURATION
N/A
##### OS / ENVIRONMENT
N/A
##### ADDITIONAL INFORMATION
Directly related information would be super helpful and save a lot of Google Search time. 
from __future__ import absolute_import, division, print_function
__metaclass__ = type
DOCUMENTATION = '''
---
module: setup
version_added: historical
short_description: Gathers facts about remote hosts
options:
    gather_subset:
        version_added: "2.1"
        description:
            - "If supplied, restrict the additional facts collected to the given subset.
              Possible values: C(all), C(min), C(hardware), C(network), C(virtual), C(ohai), and
              C(facter). Can specify a list of values to specify a larger subset.
              Values can also be used with an initial C(!) to specify that
              that specific subset should not be collected.  For instance: