new_contents: from tkinter import *
  from tkinter import ttk
  
  def new_configuration():
      ui_title_screen.grid_remove()
      notebook_parameters.grid()
  
  def edit_configuration():
      ui_title_screen.grid_remove()
  
  ui_root = Tk()
  ui_root.title("Project CARS Replay Enhancer")
  
  temp_label = StringVar()
  
  ui_title_screen = ttk.Frame(ui_root, padding=(3, 3, 12, 12))
  ui_new_configuration = ttk.Button(ui_title_screen, text="New Configuration", command=new_configuration)
  ui_edit_configuration = ttk.Button(ui_title_screen, text="Edit Configuration", command=edit_configuration)
  ui_temp_label = ttk.Label(ui_title_screen, textvariable=temp_label)
  
  ui_title_screen.grid()
  ui_new_configuration.grid(column=1, row=1)
  ui_edit_configuration.grid(column=1, row=2)
  ui_temp_label.grid(column=0, row=3, columnspan=3)
  
  notebook_parameters = ttk.Notebook(ui_root)
  
  ui_file = ttk.Frame(notebook_parameters, padding=(3, 3, 12, 12))
  
  ui_text = ttk.Frame(notebook_parameters, padding=(3, 3, 12, 12))
  notebook_parameters.add(ui_file, text="Files")
  notebook_parameters.add(ui_text, text="Text")
  
  ui_root.mainloop()
  
subject: Work in progress.