incorporated agl's review feedback

index.bs

@@ -974,20 +974,20 @@ The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "S
 
 : <dfn>Backup</dfn>
 : <dfn>Backed Up</dfn>
-:: [=Public Key Credential Sources=] may be [=backed up=] in some fashion such that they may become present on an authenticator other 
-    than their [=generating authenticator=]. [=Backup=] can occur via mechanisms including but not limited to peer-to-peer sync, 
+:: [=Public Key Credential Sources=] may be backed up in some fashion such that they may become present on an authenticator other 
+    than their [=generating authenticator=]. Backup can occur via mechanisms including but not limited to peer-to-peer sync, 
     cloud sync, local network sync, and manual import/export. See also [[#sctn-credential-backup]].
 
 : <dfn>Backup Eligibility</dfn>
 : <dfn>Backup Eligible</dfn>
 :: A [=Public Key Credential Source=]'s [=generating authenticator=] determines at creation time whether the [=public key credential source=] 
-   is allowed to be [=backed up=]. [=Backup eligibility=] is signaled in [=authenticator data=]'s [=flags=] along with the current [=backup state=]. 
-   [=Backup eligibility=] is a [=credential property=] and is permanent for a given [=public key credential source=]. 
-   A [=backup eligible=] [=public key credential source=] is referred to as a <dfn>multi-device credential</dfn> whereas one that is not 
-   [=backup eligible=] is referred to as a <dfn>single-device credential</dfn>. See also [[#sctn-credential-backup]].
+   is allowed to be [=backed up=]. Backup eligibility is signaled in [=authenticator data=]'s [=flags=] along with the current [=backup state=]. 
+   Backup eligibility is a [=credential property=] and is permanent for a given [=public key credential source=]. 
+   A backup eligible [=public key credential source=] is referred to as a <dfn>multi-device credential</dfn> whereas one that is not 
+   backup eligible is referred to as a <dfn>single-device credential</dfn>. See also [[#sctn-credential-backup]].
 
 : <dfn>Backup State</dfn>
-:: The current [=backup state=] of a [=multi-device credential=] as determined by the current [=managing authenticator=]. [=Backup state=] is 
+:: The current backup state of a [=multi-device credential=] as determined by the current [=managing authenticator=]. Backup state is 
    signaled in [=authenticator data=]'s [=flags=] and can change over time. See also [=backup eligibility=] and [[#sctn-credential-backup]].
 
 : <dfn>Biometric Recognition</dfn>
@@ -1117,9 +1117,9 @@ The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "S
     [=client-side discoverable credential=] or a [=server-side credential=].
 
 : <dfn>Generating Authenticator</dfn>
-:: The [=Generating Authenticator=] is the authenticator involved in the [=authenticatorMakeCredential=] operation resulting 
+:: The Generating Authenticator is the authenticator involved in the [=authenticatorMakeCredential=] operation resulting 
     in the creation of a given [=pubic key credential source=]. The [=generating authenticator=] is the same as the [=managing authenticator=] 
-    for [=single-device credentials=]. For [=multi-device credentials=], the [=generating authenticator=] may or may not be the same as the 
+    for [=single-device credentials=]. For [=multi-device credentials=], the generating authenticator may or may not be the same as the 
     current [=managing authenticator=] participating in a given [=authentication=] operation.
 
 : <dfn>Human Palatability</dfn>
@@ -3741,12 +3741,12 @@ valid combinations and their meaning.
 
 It is RECOMMENDED that [=[RPS]=] store the most recent value of these [=flags=] with the [=user account=] for future evaluation.
 
-The following is a non-normative, non-exhaustive list of how [=[RPS]=] might utilize these [=flags=]:
+The following is a non-normative, non-exhaustive list of how [=[RPS]=] might use these [=flags=]:
 
     - Requiring additional [=authenticators=]:
 
-        When `BE` [=flag=] is set to `0`, the [=generating authenticator=] will never allow the credential to transition from a 
-        [=single-device credential=] to a [=multi-device credential=]. 
+        When `BE` [=flag=] is set to `0`, the credential is a [=single-device credential=] and the [=generating authenticator=] will never 
+        allow the credential to be backed up.
 
         A [=single-device credential=] is not resilient to single device loss. [=[RPS]=] SHOULD ensure that a [=user account=] 
         has additional [=authenticators=] [=registration ceremony|registered=] and/or an account recovery process in place.