## CodeBook version 3.0
**Release date:** March 2022
### Introduction
This version works in Refinitiv Workspace 1.10+, Eikon Desktop 4.0.55+, Chrome 63+, Safari 13+ and Edge 79+.
New features included: Debugger, Chinese language, Command palette, Table of contents, and so on.
### Legacy kernel – Backward compatibility
The “Python 3 (legacy)” kernel has been added to CodeBook 3 for backward compatibility,
as it has almost the same pre-installed packages and extensions as CodeBook 1. You can
switch to “Python 3 (legacy)” kernel as shown in the images below. However, we recommend
refactoring your code to run under the default “Python 3” kernel.
The “Python 3” kernel contains the upgraded versions of packages and extensions that can be imported.
The list of packages and extensions can be found in the __Libraries&Extensions.md for both kernels.
### Debugger
CodeBook 3.0 equipped with a Debugger tool.
This allows notebooks to be debugged directly from CodeBook.
### Chinese language
CodeBook now provides the option of setting the language of the user interface to Simplified Chinese.
#### Setting the display language
CodeBook uses the language set in your Refinitiv user profile. If you change the language in your profile settings, restart CodeBook to apply the changes.
The current version supports English and Simplified Chinese.
### Command palette
The command palette now appears as a floating window in front of your CodeBook workspace and provides a keyboard-driven method to search and run commands.
It gives you an ability to invoke a command quickly, while keeping the sidebar closed or when switching sidebar panels.
You can access the command palette from the View menu or using the keyboard shortcuts **Cmd+Shift+C** or **Ctrl+Shift+C**.
### Examples
Equity research examples have been added.
Also, ESG and Ownership examples can be found in the "01.05. RDP Data Exploration" folder.
To access these examples, your user account must be assigned an RDP Data Exploration license.
### Python libraries and front end extensions
All the preinstalled python libraries and front end extensions are listed in the [__Libraries&Extensions.md](__Libraries&Extensions.md)