diff --git a/admin/tool/mobile/lang/en/tool_mobile.php b/admin/tool/mobile/lang/en/tool_mobile.php
index b1344cc2395..e9d2fd81d0a 100644
--- a/admin/tool/mobile/lang/en/tool_mobile.php
+++ b/admin/tool/mobile/lang/en/tool_mobile.php
@@ -91,7 +91,7 @@ $string['readingthisemailgettheapp'] = 'Reading this in an email? <a href="{$a}"
 $string['remoteaddons'] = 'Remote add-ons';
 $string['selfsignedoruntrustedcertificatewarning'] = 'It seems that the HTTPS certificate is self-signed or not trusted. The mobile app will only work with trusted sites.';
 $string['setuplink'] = 'App download page';
-$string['setuplink_desc'] = 'URL of page with links to download the mobile app from the App Store and Google Play.';
+$string['setuplink_desc'] = 'URL of page with options to download the mobile app from the App Store and Google Play. The app download page link is displayed in the page footer and in a user\'s profile. Leave blank to not display a link.';
 $string['smartappbanners'] = 'App Banners';
 $string['typeoflogin'] = 'Type of login';
 $string['typeoflogin_desc'] = 'If the site uses a SSO authentication method, then select via a browser window or via an embedded browser. An embedded browser provides a better user experience, though it doesn\'t work with all SSO plugins.';
diff --git a/blocks/myoverview/lang/en/block_myoverview.php b/blocks/myoverview/lang/en/block_myoverview.php
index 79a0b786dd6..36d7496e9e9 100644
--- a/blocks/myoverview/lang/en/block_myoverview.php
+++ b/blocks/myoverview/lang/en/block_myoverview.php
@@ -37,7 +37,7 @@ $string['aria:displaydropdown'] = 'Display drop-down menu';
 $string['aria:favourites'] = 'Show starred courses';
 $string['aria:future'] = 'Show future courses';
 $string['aria:groupingdropdown'] = 'Grouping drop-down menu';
-$string['aria:inprogress'] = 'Show in courses in progress';
+$string['aria:inprogress'] = 'Show courses in progress';
 $string['aria:lastaccessed'] = 'Sort courses by last accessed date';
 $string['aria:list'] = 'Switch to list view';
 $string['aria:title'] = 'Sort courses by course name';
diff --git a/lang/en/auth.php b/lang/en/auth.php
index 1233c20838d..4f76b92687d 100644
--- a/lang/en/auth.php
+++ b/lang/en/auth.php
@@ -51,7 +51,7 @@ $string['auth_remove_keep'] = 'Keep internal';
 $string['auth_remove_suspend'] = 'Suspend internal';
 $string['auth_remove_user'] = 'Specify what to do with internal user account during mass synchronisation when user was removed from external source. Only suspended users are automatically restored if they reappear in the external source.';
 $string['auth_remove_user_key'] = 'Removed ext user';
-$string['auth_sync_suspended']  = 'When enabled, the suspended attribute will be used to update the local user account\'s suspension status.';
+$string['auth_sync_suspended']  = 'If enabled, the suspended attribute will be used to update the local user account\'s suspension status.';
 $string['auth_sync_suspended_key'] = 'Synchronise local user suspension status';
 $string['auth_sync_script'] = 'User account synchronisation';
 $string['auth_updatelocal'] = 'Update local';
diff --git a/lang/en/availability.php b/lang/en/availability.php
index c92b544f827..e6620e2d957 100644
--- a/lang/en/availability.php
+++ b/lang/en/availability.php
@@ -28,7 +28,7 @@ $string['and'] = 'and';
 $string['condition_group'] = 'Restriction set';
 $string['condition_group_info'] = 'Add a set of nested restrictions to apply complex logic.';
 $string['enableavailability'] = 'Enable restricted access';
-$string['enableavailability_desc'] = 'When enabled, this lets you set conditions (based on date, grade, or completion) that control whether an activity or resource can be accessed.';
+$string['enableavailability_desc'] = 'If enabled, conditions (based on date, grade, completion etc.) may be set to control whether an activity or resource can be accessed.';
 $string['error_list_nochildren'] = 'Restriction sets should contain at least one condition.';
 $string['hidden_marker'] = '(hidden otherwise)';
 $string['hidden_individual'] = 'Hidden entirely if user does not meet this condition';
diff --git a/lang/en/badges.php b/lang/en/badges.php
index cba30b973e7..4512e98653a 100644
--- a/lang/en/badges.php
+++ b/lang/en/badges.php
@@ -176,7 +176,7 @@ $string['claimid'] = 'Claim URL';
 $string['clearsettings'] = 'Clear settings';
 $string['completionnotenabled'] = 'Course completion is not enabled for this course, so it cannot be included in badge criteria. Course completion may be enabled in the course settings.';
 $string['completioninfo'] = 'This badge was issued for completing: ';
-$string['configenablebadges'] = 'When enabled, this feature lets you create badges and award them to site users.';
+$string['configenablebadges'] = 'If enabled, this feature lets you create badges and award them to site users.';
 $string['configuremessage'] = 'Badge message';
 $string['connect'] = 'Connect';
 $string['connected'] = 'Connected';
diff --git a/lang/en/completion.php b/lang/en/completion.php
index e8cd5a30546..23b5b007b8c 100644
--- a/lang/en/completion.php
+++ b/lang/en/completion.php
@@ -112,7 +112,7 @@ $string['completionupdated'] = 'Updated completion for activity <b>{$a}</b>';
 $string['completionview'] = 'Require view';
 $string['completionview_desc'] = 'Student must view this activity to complete it';
 $string['configcompletiondefault'] = 'The default setting for completion tracking when creating new activities.';
-$string['configenablecompletion'] = 'When enabled, this lets you turn on completion tracking (progress) features at course level.';
+$string['configenablecompletion'] = 'If enabled, course and activity completion conditions may be set. Setting activity completion conditions is recommended so that meaningful data is displayed for users in their course overview on the Dashboard.';
 $string['confirmselfcompletion'] = 'Confirm self completion';
 $string['courseaggregation'] = 'Condition requires';
 $string['courseaggregation_all'] = 'ALL selected courses to be completed';
diff --git a/lang/en/user.php b/lang/en/user.php
index 56777bb11e1..aefc750d367 100644
--- a/lang/en/user.php
+++ b/lang/en/user.php
@@ -47,7 +47,7 @@ $string['privacy:metadata:description'] = 'General details about this user.';
 $string['privacy:metadata:devicename'] = 'The device name, occam or iPhone etc..';
 $string['privacy:metadata:devicetablesummary'] = 'This table stores user\'s mobile devices information in order to send PUSH notifications';
 $string['privacy:metadata:email'] = 'An email address for contact.';
-$string['privacy:metadata:emailstop'] = 'A preference to stop email being sent to the user.';
+$string['privacy:metadata:emailstop'] = 'A preference to disable notifications from being sent to the user.';
 $string['privacy:metadata:fieldid'] = 'The ID relating to the custom user field.';
 $string['privacy:metadata:filelink'] = 'There are multiple different files for the user stored in the files table.';
 $string['privacy:metadata:firstaccess'] = 'The time that this user first accessed the site.';
diff --git a/mod/assign/lang/en/assign.php b/mod/assign/lang/en/assign.php
index 2c55fcc76e1..426730864e1 100644
--- a/mod/assign/lang/en/assign.php
+++ b/mod/assign/lang/en/assign.php
@@ -291,7 +291,9 @@ $string['groupoverrides'] = 'Group overrides';
 $string['groupoverridesdeleted'] = 'Group overrides deleted';
 $string['groupsnone'] = 'No groups you can access.';
 $string['hidegrader'] = 'Hide grader identity from students';
-$string['hidegrader_help'] = 'Hides the identity of any user who grades an assignment submission, so students can\'t see who marked their work.';
+$string['hidegrader_help'] = 'If enabled, the identity of any user who grades an assignment submission is not shown, so students can\'t see who marked their work.
+
+Note that this setting has no effect on the comments box on the grading page.';
 $string['hideshow'] = 'Hide/Show';
 $string['hiddenuser'] = 'Participant ';
 $string['inactiveoverridehelp'] = '* Student does not have the correct group or role to attempt the assignment';
diff --git a/report/insights/lang/en/report_insights.php b/report/insights/lang/en/report_insights.php
index e8aa1d915e7..2a2a543221d 100644
--- a/report/insights/lang/en/report_insights.php
+++ b/report/insights/lang/en/report_insights.php
@@ -23,7 +23,7 @@
  */
 
 $string['actionsaved'] = 'Your feedback of \'{$a}\' has been saved.';
-$string['disabledmodel'] = 'Sorry, this model has been disabled by the administrator';
+$string['disabledmodel'] = 'This model has been disabled by an administrator.';
 $string['indicators'] = 'Indicators';
 $string['insight'] = 'Insight';
 $string['insights'] = 'Insights';