Coordinates by TomCat's Tours (Retail + Classic)

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Map coordinates addon based on the original version by Szandos and updated for BfA 

This add-on displays your current position in x,y coordinates above your mini map and on the world map.  You can also view the x,y coordinate position on the world map that is under your mouse cursor.  This is useful for locating items and points of interest that are mentioned with coordinates in posts on sites such as Wowhead.