**Summary**
We will separate the user preference for Reference Previews and Page Previews, based on user feedback on this decision. Reference previews will be enabled by default for readers/anonymous users, and rolled out as an opt-out feature for logged in users (enabled by default).
**Note, that the beta preference settings for Reference Previews must be preserved for the remaining wikis until the feature is deployed to all wikis.**
**Requirements**
[] Revert changes made in {T265709}
[] Add a preference to the Reading preferences section of the Appearance user preferences tab for reference previews, underneath the Page Previews setting.
[] (see table below) If the user has the NavPopups gadget enabled, which hides the feature, it does not change a users setting but visibly greys out the preference and adds a message to disable the gadget to user the features. The same applies for if the user has RefTooltips enabled (or the wiki has RefTooltips enabled by default)
[] The merged Preview preference is editable in three different locations:
* Logged in users:
[] Appearance preference page (wording below)
[] The cog-wheel/pop-up for Ref Previews, implemented in this ticket Note: revert the changes made in {T234205} to change the page previews pop up, and add a new pop up for the RefPreviews feature (wording below)
* Anonymous users:
[] Cog-wheel pop-up that saves the preference via a cookie
**Mocks**
Use same text as page previews if no specific gadget is detected.
{F34165607}
User settings (backend): Preference setting
|**Gadget**| **Reference preference setting**| **Message** (shown below the standard preference text based on which gadget is enabled)|
|Nav pop ups enabled| Enabled| Preference enabled, greyed out, not clickable | You have the Navigation popups gadget enabled, so you won't see previews provided by this feature. Depending on your wiki, the gadget may a have slightly different name. If you continue to experience issues, please review your gadget and user scripts, including global ones.|
|RefTooltips enabled| Enabled | Preference enabled, greyed out, not clickable | You have the Navigation popups gadget enabled, so you won't see previews provided by this feature. Depending on your wiki, the gadget may a have slightly different name. If you continue to experience issues, please review your gadget and user scripts, including global ones.|
|Both gadgets enabled| Enabled| Preference enabled, greyed out, not clickable (current behaviour)| You have the Navigation popups and Reference Tooltips gadgets enabled, so you won't see previews provided by this feature. Depending on your wiki, the gadget may a have slightly different name. If you continue to experience issues, please review your gadget and user scripts, including global ones. |
[] **For all of the above messages, the names of gadgets should be links which take you to the relevant section on the gadget preferences tab.**