Current questions and answers regarding the map editor.

Is it possible to modify a specific building, or how?

You can modify a specific building (using a script), or you can modify the entire data type of buildings (this is done with a mod).

For example, there's a "Fairy Dwelling" on the map, and only in this dwelling can you recruit 50 Hunters (or Phoenixes) weekly (or even daily – that's what the script is for!).

A mod does almost the same thing – recruiting Hunters (50 weekly, but not daily!) or Phoenixes – the only difference is that in other Fairy Dwellings, there will also be Hunters or Phoenixes (while in the scripted version, Hunters/Phoenixes are only available in one dwelling, and the rest have standard fairies).