How to edit the "1STD.SET"file in the "gameset" Folder ，please?

[wan]

I heard people said it will allows to edit many types of properties within the game, and to add new products and production rules to edit the "1STD.SET"file .

but I don't know how to edit it ,

or ,What is the tool for editing this document?

I'm sorry that my engligh is very poor, The above is translated by translation software.

[David]

Actually 1STD.set contains game data that are not moddable. For moddable data, please refer to https://www.capitalismlab.com/mod/