The user is free to add any file into a project.
These might be files, which can be directly opened and visualized with the software or files, which can only be opened with external applications.
All files can be collected and stored together and organized in your projects.
Adding a file multiple times.
Filenames are unique within a project. Therefore, a file can only be added once into a project. It is not possible to add multiple instances
in e.g. different folders of a project.