Displays a simple list of map vignettes that're currently visible. Or maybe not so visible.
This cannot show ore or herbs. Blizzard works very hard to make those inaccessible to addons.
For a summary of settings:
/wotm
To toggle whether the frame shows a title (which can be used to drag it around):
/wotm title
To toggle whether the frame will show even when there's nothing nearby on the map:
/wotm empty
To toggle whether the frame will include items which aren't visible currently (on the minimap or world map):
/wotm hidden
To toggle showing a lot of debug information about vignettes that you probably don't care about in the tooltips:
/wotm debug