What are the particularities of a world map and how can I make one?
From OHRRPGCE-Wiki
The world map is no different than any other map-- Not in terms of editor features anyway.
The important difference between a world map and other maps in your game is just how you use it. A world map usually consists of maptiles that show things at a different scale. A city, for example, may be a single maptile. Most RPG authors will draw a maptile that resembles a town or that resembles a castle, or that resembles a cave, and will put a door on that maptile to link to another map.
Here is an example world map. The only thing that make it special, is that it uses a different tileset than the rest of the game

