Merge pull request #495 from jafiala/The-personhood-of-users-#466

Update grammar.adoc with guidance on inanimate users

supplementary_style_guide/style_guidelines/grammar.adoc

@@ -128,4 +128,30 @@ Avoid long introductions and unnecessary context. Shorten unnecessarily long sen
 === Principle 5: Error recovery, verification, and troubleshooting
 Recognize that people make mistakes and need to verify that they have completed a task. Be sure to include troubleshooting, error recovery, and verification steps.
 
+[[users]]
+== Users
+In most cases, the word "user" refers to a person or a person's user account, and therefore would be considered animate. In these cases, use animate personal pronouns such as "who".
+
+In certain technical cases, these users are not persons but instead system accounts or more abstract concepts (inanimate). For example, Linux `root` and `guest` users do not relate to any person. Applications and services might run as specific Linux users with no person controlling them. SELinux users such as `user_u` or `sysadm_u` are identifiers of one or multiple Linux users for access control purposes. In these specific cases, refer to these inanimate users with inanimate personal pronouns such as "that".
+
+In these specific cases, and only if you cannot write around it, you can refer to these inanimate users with inanimate personal pronouns such as "that".
+
+.Examples
+* Animate user
++
+image:images/no.png[no] Experienced _users that_ can configure their own systems...
++
+image:images/yes.png[yes] _Users who_ want to install their own packages...
+
+* Inanimate user
++
+image:images/no.png[no] A Linux user has the restrictions of the _SELinux user who_ it is assigned to.
++
+image:images/no.png[no] A Linux user has the restrictions of the _SELinux user_ to _whom_ it is assigned.
++
+image:images/yes.png[yes] Specify a _user that_ is allowed to perform the requested action.
++
+image:images/yes.png[yes] A Linux user has the restrictions of the _SELinux user that_ it is assigned to.
+
+
 // TODO: Add new style entries alphabetically in this file