Has top-level menus that expose actions available in JupyterLab with their keyboard shortcuts. The default menus are:
File: actions related to files and folders
Edit: actions related to editing documents and other activities
View: actions that alter the appearance of JupyterLab
Run: actions for running code in different activities such as notebooks and code consoles
Kernel: actions for managing kernels, which are separate processes for running code
Tabs: a list of the open documents and activities in the dock panel
Settings: common settings and an advanced settings editor
Help: a list of JupyterLab and kernel help links
