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From Hobbs Knowledge Base

Summary

To get the small "W" logo after Interwiki Wikipedia links (like this: RSS), follow these steps:

• Save this image and upload it to your own Wiki:
• Take the path of your newly-uploaded image (in my case, it's "/w/images/2/20/Wikipedia-icon.png") and note it down somewhere.
• Add the following code to MediaWiki:Common.css:

#bodyContent a.extiw[href *=".wikipedia.org"],
#bodyContent a.external[href *=".wikipedia.org"]{
   background: url(/w/images/2/20/Wikipedia-icon.png) top right no-repeat;
       padding-right: 16px;
}

• You might need to refresh your browser (possibly with Ctrl + F5) in order to see the updates, but on my wiki it just seemed to work!

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