diff --git a/doc/sphinx/Pacemaker_Explained/acls.rst b/doc/sphinx/Pacemaker_Explained/acls.rst
index 3c6b538bd5..b9a622a52e 100644
--- a/doc/sphinx/Pacemaker_Explained/acls.rst
+++ b/doc/sphinx/Pacemaker_Explained/acls.rst
@@ -1,426 +1,427 @@
 .. index::
    single: Access Control List (ACL)
 
 .. _acl:
 
 Access Control Lists (ACLs)
 ---------------------------
 
 By default, the ``root`` user or any user in the ``haclient`` group can modify
 Pacemaker's CIB without restriction. Pacemaker offers *access control lists
 (ACLs)* to provide more fine-grained authorization.
    
 .. important::
 
    Being able to modify the CIB's resource section allows a user to run any
    executable file as root, by configuring it as an LSB resource with a full
    path.
 
 ACL Prerequisites
 #################
    
 In order to use ACLs:
 
-* The Pacemaker software must have been built with ACL support. If the output
-  of the command ``pacemakerd --features`` contains ``acls``, your installation
-  supports ACLs.
+* The ``enable-acl`` :ref:`cluster option <cluster_options>` must be set to
+  true.
 
 * Desired users must have user accounts in the ``haclient`` group on all
   cluster nodes in the cluster.
 
 * If your CIB was created before Pacemaker 1.1.12, it might need to be updated
   to the current schema (using ``cibadmin --upgrade`` or a higher-level tool
   equivalent) in order to use the syntax documented here.
 
-* The ``enable-acl`` :ref:`cluster option <cluster_options>` must be set to
-  true.
+* Prior to the 2.1.0 release, the Pacemaker software had to have been built
+  with ACL support. If you are using an older release, your installation
+  supports ACLs only if the output of the command ``pacemakerd --features``
+  contains ``acls``. In newer versions, ACLs are always enabled.
    
 
 .. index::
    single: Access Control List (ACL); acls
    pair: acls; XML element
 
 ACL Configuration
 #################
 
 ACLs are specified within an ``acls`` element of the CIB. The ``acls`` element
 may contain any number of ``acl_role``, ``acl_target``, and ``acl_group``
 elements.
    
 
 .. index::
    single: Access Control List (ACL); acl_role
    pair: acl_role; XML element
 
 ACL Roles
 #########
 
 An ACL *role* is a collection of permissions allowing or denying access to
 particular portions of the CIB. A role is configured with an ``acl_role``
 element in the CIB ``acls`` section.
    
 .. table:: **Properties of an acl_role element**
 
    +------------------+-----------------------------------------------------------+
    | Attribute        | Description                                               |
    +==================+===========================================================+
    | id               | .. index::                                                |
    |                  |    single: acl_role; id (attribute)                       |
    |                  |    single: id; acl_role attribute                         |
    |                  |    single: attribute; id (acl_role)                       |
    |                  |                                                           |
    |                  | A unique name for the role *(required)*                   |
    +------------------+-----------------------------------------------------------+
    | description      | .. index::                                                |
    |                  |    single: acl_role; description (attribute)              |
    |                  |    single: description; acl_role attribute                |
    |                  |    single: attribute; description (acl_role)              |
    |                  |                                                           |
    |                  | Arbitrary text (not used by Pacemaker)                    |
    +------------------+-----------------------------------------------------------+
 
 An ``acl_role`` element may contain any number of ``acl_permission`` elements.
    
 .. index::
    single: Access Control List (ACL); acl_permission
    pair: acl_permission; XML element
 
 .. table:: **Properties of an acl_permission element**
 
    +------------------+-----------------------------------------------------------+
    | Attribute        | Description                                               |
    +==================+===========================================================+
    | id               | .. index::                                                |
    |                  |    single: acl_permission; id (attribute)                 |
    |                  |    single: id; acl_permission attribute                   |
    |                  |    single: attribute; id (acl_permission)                 |
    |                  |                                                           |
    |                  | A unique name for the permission *(required)*             |
    +------------------+-----------------------------------------------------------+
    | description      | .. index::                                                |
    |                  |    single: acl_permission; description (attribute)        |
    |                  |    single: description; acl_permission attribute          |
    |                  |    single: attribute; description (acl_permission)        |
    |                  |                                                           |
    |                  | Arbitrary text (not used by Pacemaker)                    |
    +------------------+-----------------------------------------------------------+
    | kind             | .. index::                                                |
    |                  |    single: acl_permission; kind (attribute)               |
    |                  |    single: kind; acl_permission attribute                 |
    |                  |    single: attribute; kind (acl_permission)               |
    |                  |                                                           |
    |                  | The access being granted. Allowed values are ``read``,    |
    |                  | ``write``, and ``deny``. A value of ``write`` grants both |
    |                  | read and write access.                                    |
    +------------------+-----------------------------------------------------------+
    | object-type      | .. index::                                                |
    |                  |    single: acl_permission; object-type (attribute)        |
    |                  |    single: object-type; acl_permission attribute          |
    |                  |    single: attribute; object-type (acl_permission)        |
    |                  |                                                           |
    |                  | The name of an XML element in the CIB to which the        |
    |                  | permission applies. (Exactly one of ``object-type``,      |
    |                  | ``xpath``, and ``reference`` must be specified for a      |
    |                  | permission.)                                              |
    +------------------+-----------------------------------------------------------+
    | attribute        | .. index::                                                |
    |                  |    single: acl_permission; attribute (attribute)          |
    |                  |    single: attribute; acl_permission attribute            |
    |                  |    single: attribute; attribute (acl_permission)          |
    |                  |                                                           |
    |                  | If specified, the permission applies only to              |
    |                  | ``object-type`` elements that have this attribute set (to |
    |                  | any value). If not specified, the permission applies to   |
    |                  | all ``object-type`` elements. May only be used with       |
    |                  | ``object-type``.                                          |
    +------------------+-----------------------------------------------------------+
    | reference        | .. index::                                                |
    |                  |    single: acl_permission; reference (attribute)          |
    |                  |    single: reference; acl_permission attribute            |
    |                  |    single: attribute; reference (acl_permission)          |
    |                  |                                                           |
    |                  | The ID of an XML element in the CIB to which the          |
    |                  | permission applies. (Exactly one of ``object-type``,      |
    |                  | ``xpath``, and ``reference`` must be specified for a      |
    |                  | permission.)                                              |
    +------------------+-----------------------------------------------------------+
    | xpath            | .. index::                                                |
    |                  |    single: acl_permission; xpath (attribute)              |
    |                  |    single: xpath; acl_permission attribute                |
    |                  |    single: attribute; xpath (acl_permission)              |
    |                  |                                                           |
    |                  | An `XPath <https://www.w3.org/TR/xpath-10/>`_             |
    |                  | specification selecting an XML element in the CIB to      |
    |                  | which the permission applies. Attributes may be specified |
    |                  | in the XPath to select particular elements, but the       |
    |                  | permissions apply to the entire element. (Exactly one of  |
    |                  | ``object-type``, ``xpath``, and ``reference`` must be     |
    |                  | specified for a permission.)                              |
    +------------------+-----------------------------------------------------------+
 
 .. important::
 
    * Permissions are applied to the selected XML element's entire XML subtree
      (all elements enclosed within it).
    
    * Write permission grants the ability to create, modify, or remove the
      element and its subtree, and also the ability to create any "scaffolding"
      elements (enclosing elements that do not have attributes other than an
      ID).
    
    * Permissions for more specific matches (more deeply nested elements) take
      precedence over more general ones.
    
    * If multiple permissions are configured for the same match (for example, in
      different roles applied to the same user), any ``deny`` permission takes
      precedence, then ``write``, then lastly ``read``.
    
 
 ACL Targets and Groups
 ######################
    
 ACL targets correspond to user accounts on the system.
 
 .. index::
    single: Access Control List (ACL); acl_target
    pair: acl_target; XML element
 
 .. table:: **Properties of an acl_target element**
 
    +------------------+-----------------------------------------------------------+
    | Attribute        | Description                                               |
    +==================+===========================================================+
    | id               | .. index::                                                |
    |                  |    single: acl_target; id (attribute)                     |
    |                  |    single: id; acl_target attribute                       |
    |                  |    single: attribute; id (acl_target)                     |
    |                  |                                                           |
    |                  | The name of a user on the system *(required)*             |
    +------------------+-----------------------------------------------------------+
 
 ACL groups may be specified, but are not currently used by Pacemaker. This is
 expected to change in a future version.
    
 .. index::
    single: Access Control List (ACL); acl_group
    pair: acl_group; XML element
 
 .. table:: **Properties of an acl_group element**
 
    +------------------+-----------------------------------------------------------+
    | Attribute        | Description                                               |
    +==================+===========================================================+
    | id               | .. index::                                                |
    |                  |    single: acl_group; id (attribute)                      |
    |                  |    single: id; acl_group attribute                        |
    |                  |    single: attribute; id (acl_group)                      |
    |                  |                                                           |
    |                  | The name of a group on the system *(required)*            |
    +------------------+-----------------------------------------------------------+
 
 Each ``acl_target`` and ``acl_group`` element may contain any number of ``role``
 elements.
    
 .. index::
    single: Access Control List (ACL); role
    pair: role; XML element
 
 .. table:: **Properties of a role element**
 
    +------------------+-----------------------------------------------------------+
    | Attribute        | Description                                               |
    +==================+===========================================================+
    | id               | .. index::                                                |
    |                  |    single: role; id (attribute)                           |
    |                  |    single: id; role attribute                             |
    |                  |    single: attribute; id (role)                           |
    |                  |                                                           |
    |                  | The ``id`` of an ``acl_role`` element that specifies      |
    |                  | permissions granted to the enclosing target or group.     |
    +------------------+-----------------------------------------------------------+
 
 .. important::
 
    The ``root`` and ``hacluster`` user accounts always have full access to the
    CIB, regardless of ACLs. For all other user accounts, when ``enable-acl`` is
    true, permission to all parts of the CIB is denied by default (permissions
    must be explicitly granted).
    
 ACL Examples
 ############
    
 .. code-block:: xml
 
    <acls>
    
       <acl_role id="read_all">
           <acl_permission id="read_all-cib" kind="read" xpath="/cib" />
       </acl_role>
    
       <acl_role id="operator">
    
           <acl_permission id="operator-maintenance-mode" kind="write"
               xpath="//crm_config//nvpair[@name='maintenance-mode']" />
    
           <acl_permission id="operator-maintenance-attr" kind="write"
               xpath="//nvpair[@name='maintenance']" />
    
           <acl_permission id="operator-target-role" kind="write"
               xpath="//resources//meta_attributes/nvpair[@name='target-role']" />
    
           <acl_permission id="operator-is-managed" kind="write"
               xpath="//resources//nvpair[@name='is-managed']" />
    
           <acl_permission id="operator-rsc_location" kind="write"
               object-type="rsc_location" />
    
       </acl_role>
    
       <acl_role id="administrator">
           <acl_permission id="administrator-cib" kind="write" xpath="/cib" />
       </acl_role>
    
       <acl_role id="minimal">
    
           <acl_permission id="minimal-standby" kind="read"
               description="allow reading standby node attribute (permanent or transient)"
               xpath="//instance_attributes/nvpair[@name='standby']"/>
    
           <acl_permission id="minimal-maintenance" kind="read"
               description="allow reading maintenance node attribute (permanent or transient)"
               xpath="//nvpair[@name='maintenance']"/>
    
           <acl_permission id="minimal-target-role" kind="read"
               description="allow reading resource target roles"
               xpath="//resources//meta_attributes/nvpair[@name='target-role']"/>
    
           <acl_permission id="minimal-is-managed" kind="read"
               description="allow reading resource managed status"
               xpath="//resources//meta_attributes/nvpair[@name='is-managed']"/>
    
           <acl_permission id="minimal-deny-instance-attributes" kind="deny"
               xpath="//instance_attributes"/>
    
           <acl_permission id="minimal-deny-meta-attributes" kind="deny"
               xpath="//meta_attributes"/>
    
           <acl_permission id="minimal-deny-operations" kind="deny"
               xpath="//operations"/>
    
           <acl_permission id="minimal-deny-utilization" kind="deny"
               xpath="//utilization"/>
    
           <acl_permission id="minimal-nodes" kind="read"
               description="allow reading node names/IDs (attributes are denied separately)"
               xpath="/cib/configuration/nodes"/>
    
           <acl_permission id="minimal-resources" kind="read"
               description="allow reading resource names/agents (parameters are denied separately)"
               xpath="/cib/configuration/resources"/>
    
           <acl_permission id="minimal-deny-constraints" kind="deny"
               xpath="/cib/configuration/constraints"/>
    
           <acl_permission id="minimal-deny-topology" kind="deny"
               xpath="/cib/configuration/fencing-topology"/>
    
           <acl_permission id="minimal-deny-op_defaults" kind="deny"
               xpath="/cib/configuration/op_defaults"/>
    
           <acl_permission id="minimal-deny-rsc_defaults" kind="deny"
               xpath="/cib/configuration/rsc_defaults"/>
    
           <acl_permission id="minimal-deny-alerts" kind="deny"
               xpath="/cib/configuration/alerts"/>
    
           <acl_permission id="minimal-deny-acls" kind="deny"
               xpath="/cib/configuration/acls"/>
    
           <acl_permission id="minimal-cib" kind="read"
               description="allow reading cib element and crm_config/status sections"
               xpath="/cib"/>
    
       </acl_role>
    
       <acl_target id="alice">
          <role id="minimal"/>
       </acl_target>
    
       <acl_target id="bob">
          <role id="read_all"/>
       </acl_target>
    
       <acl_target id="carol">
          <role id="read_all"/>
          <role id="operator"/>
       </acl_target>
    
       <acl_target id="dave">
          <role id="administrator"/>
       </acl_target>
    
    </acls>
 
 In the above example, the user ``alice`` has the minimal permissions necessary
 to run basic Pacemaker CLI tools, including using ``crm_mon`` to view the
 cluster status, without being able to modify anything. The user ``bob`` can
 view the entire configuration and status of the cluster, but not make any
 changes. The user ``carol`` can read everything, and change selected cluster
 properties as well as resource roles and location constraints. Finally,
 ``dave`` has full read and write access to the entire CIB.
 
 Looking at the ``minimal`` role in more depth, it is designed to allow read
 access to the ``cib`` tag itself, while denying access to particular portions
 of its subtree (which is the entire CIB).
 
 This is because the DC node is indicated in the ``cib`` tag, so ``crm_mon``
 will not be able to report the DC otherwise. However, this does change the
 security model to allow by default, since any portions of the CIB not
 explicitly denied will be readable. The ``cib`` read access could be removed
 and replaced with read access to just the ``crm_config`` and ``status``
 sections, for a safer approach at the cost of not seeing the DC in status
 output.
 
 For a simpler configuration, the ``minimal`` role allows read access to the
 entire ``crm_config`` section, which contains cluster properties. It would be
 possible to allow read access to specific properties instead (such as
 ``stonith-enabled``, ``dc-uuid``, ``have-quorum``, and ``cluster-name``) to
 restrict access further while still allowing status output, but cluster
 properties are unlikely to be considered sensitive.
 
 
 ACL Limitations
 ###############
 
 Actions performed via IPC rather than the CIB
 _____________________________________________
 
 ACLs apply *only* to the CIB.
 
 That means ACLs apply to command-line tools that operate by reading or writing
 the CIB, such as ``crm_attribute`` when managing permanent node attributes,
 ``crm_mon``, and ``cibadmin``.
 
 However, command-line tools that communicate directly with Pacemaker daemons
 via IPC are not affected by ACLs. For example, users in the ``haclient`` group
 may still do the following, regardless of ACLs:
 
 * Query transient node attribute values using ``crm_attribute`` and
   ``attrd_updater``.
 
 * Query basic node information using ``crm_node``.
 
 * Erase resource operation history using ``crm_resource``.
 
 * Query fencing configuration information, and execute fencing against nodes,
   using ``stonith_admin``.
 
 ACLs and Pacemaker Remote
 _________________________
 
 ACLs apply to commands run on Pacemaker Remote nodes using the Pacemaker Remote
 node's name as the ACL user name.
 
 The idea is that Pacemaker Remote nodes (especially virtual machines and
 containers) are likely to be purpose-built and have different user accounts
 from full cluster nodes.