Merge pull request #872 from nep/patch-13

Update single-variables.md

Author: robinsowell

docs/templates/globals/single-variables.md

@@ -33,12 +33,14 @@ This variable will be substituted for the global character set (UTF-8). It is ty
 
 ### `{cp_session_id}`
 
-The session id for the control panel. This is the value needed in the "S=" portion of the control panel URL. Only output for logged-in members who have access to the Control Panel, for instance to build a front-end URL to an add-on in the control panel:
+The active session id for the control panel. This is the value needed in the "S=" portion of the control panel URL. Only made available for logged-in members who have access to the Control Panel. Used to build a URL from the front-end to, for instance, an add-on in the control panel. 
 
-    {if logged_in_role_id == 1}
-      &bull; <a href="{cp_url}?/cp/addons/settings/my_addon&S={cp_session_id}"></a>
+    {if logged_in_primary_role_id == 1}
+      &bull; <a href="{cp_url}?/cp/addons/settings/my_addon{if cp_session_id}&S={cp_session_id}{/if}">CP Link</a>
     {/if}
 
+NOTE: **Note:** To check non-primary roles, use [exp:member:has_role](/member/member-roles-tags.html#expmemberhas_role)
+
 ### `{cp_url}`
 
 The URL to the control panel for this site. Only output for logged-in members who have access to the Control Panel.
@@ -313,6 +315,8 @@ The Member ID for the currently logged-in user.
 
 The Primary Role ID number for the currently logged-in user.
 
+NOTE: **Note:** To check and display non-primary roles, use [exp:member:has_role](/member/member-roles-tags.html#expmemberhas_role)
+
 ### `{logged_in_primary_role_name}`
 
 The title of the Primary Role for the currently logged-in user.