docs: def project(num=None, *args, **kwargs):
      """
      Create a new main project
  
      Parameters
      ----------
      num: int
          The number of the project
      %(Project.parameters.no_num)s
  
      Returns
      -------
      Project
          The with the given `num` (if it does not already exist, it is created)
  
      See Also
      --------
      scp: Sets the current project
      gcp: Returns the current project
      """
      numbers = [project.num for project in _open_projects]
      if num in numbers:
          return _open_projects[numbers.index(num)]
      if num is None:
          num = max(numbers) + 1 if numbers else 1
      project = PROJECT_CLS.new(num, *args, **kwargs)
      _open_projects.append(project)
      return project