There is a particular setting that you can get when you save a file: set spawn no objects flag. What does that setting do? Does it prevent any objects from spawning?

What about the "override old version"? Does it do anything to the resources of the tiles of the maps and the start locations?

Also, every map I have makes the default size tiny for Anthys mods - is there a way to change this and the number of default starting players?

Finally, is it possible to mod the amount of resources on a given tile? For example, say I want a tile to have 3 food, 3 production, and 4 essence - how would I do this? There does not seem to be a tool for doing this and neither the wand nor the mouse (which selects the object on the tile) have any impact.