How to manage projects.
The main entity you work on in GroIMP is the project. A project may consist of various parts, e.g., files, source code, a scene (2D, 3D, or other), resource objects like data sets, 3D materials or the like. Several projects can be open at the same time, each in its own main window.
It is possible to compress a project into a gsz manually by running any compression tool. The only reauirement is to ensure that the META-INF folder is compressed first (like in jars).