MetaMap adds features to the WoW world map, keeping all mapping type features in a single place.
Some features are:

Adjust the map window size.
Move the map anywhere on the screen.
Adjust the opacity of the window & maps.
Saved sets for toggling between 2 map modes.
Allows full player movement, messaging, etc. with map open.
Adds coords to the main map and the Minimap
Adds Instance maps which open to the correct instance you enter.
Default data included for all bosses & locations etc.
User editable notes for all maps, including instance maps.
NPC/Mob database collectable by mouseover or keypress.
Toggling on/off display of unexplored areas of the map.
Boss Loot Tables displays all the loot dropped by bosses, and more.
Waypoint system to guide you to any set point.
Complete Quest logger with optional history database.
Tracker module for auto-gathering Herbs/ ores etc.
NoteBook module for additional notes, linked to Tooltips.
Inbuilt Import and export facilities for various data formats.
Inbuilt Backup and Restore facilities.
Minimap button to toggle World Map or display Options.
Key bindings for various MetaMap functions.
Full support for Titan Bar and FuBar.

INSTALLATION:
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Extract ALL folders in the archive to the InterfaceAddOns location. If you wish the Instance maps to be populated with default information, then on first installation you will need to select 'Extended Options' from the MetaMap menu.
Select the 'Database' tab, then click 'Load Imports'. This will enable the default import button, 'Import Instance Notes'. Click on the 'Import' button to import the data.

CREDITS:
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Author: Urshurak - aka MetaHawk - Realm: Aggramar
Maps created by Nifl.
Original MapNotes code by Sir.Bender.
Original FullWorldMap code by Mozz.
Original MetaMapBLT code by Daviesh.
Original MetaMapBWP code by Noraj.
French localisation by Sparrows.
German localisation by oneofamillion.
Spanish localisation by Fili.