why does "latin" appear in the "Insert/Edit an Image or Media" dialog?

Why does "latin" appear in the "Insert Image or Media" dialog?

When I click in the WYSIWYG editor on a page, press "Insert/Edit image or media" button, I get the "Insert Image or Media" dialog window opening up. When I select an image to insert, on the General tab, it shows the options to set for the image (width, height, etc.) and it also previews what that image looks like to the right. Why does latin always appear beside this preview image:

It does not appear anywhere in the code once the image is inserted... I just don't understand why this appears in the dialog. Also, you cannot edit or delete it.