Introduced in update 1.2.4, the automatic table of content is a special JSON value that lists all instances of a given entity.
For example, this is especially useful if you want to have a quick access to the location of all your
PlayerStart entities in your levels without parsing all the actual levels manually.
To enable it, just check the “Add to table of content” option of an Entity definition.
Warning: it is recommend to not put every entities in the table of content or you will end up with a very bloated project JSON file.