What can I do on my ipad in IOS 18 that I couldn't before?

In iPadOS 18, there are several new features and improvements that enhance the user experience and provide new capabilities:

Apple Pencil Pro Enhancements:
- Undo Slider: Squeezing the Apple Pencil Pro presents an undo slider, making it the quickest way to work through undo history.
- PK Tool Picker: The new PK tool picker allows you to define available tools and use them with PK canvas view or your custom drawing canvas. This feature is designed to work seamlessly with Apple Pencil Pro, providing a rich tool-picking experience with less code. (What’s new in UIKit)
Multi-App Mode:
- iPadOS 17.6 introduced multi-app mode, which includes secondary apps such as notepads, spreadsheets, assistive apps, coding apps, and a new calculator app for iPad. This mode is designed to enhance productivity by allowing multiple apps to be used simultaneously. (What’s new in device management)
Customizable Home Screen:
- App icons and widgets can now appear in light, dark, or tinted versions, providing a more customizable home screen experience. A tinted version of your app icon will automatically be available after upgrading to iOS 18. (Platforms State of the Union)
New Controls API:
- The new controls API allows you to create controls that can toggle settings, execute actions, or deep link to specific experiences. These controls can be added to the control center or assigned to the action button on the iPhone 15 Pro, and for the first time, they can appear on the lock screen. (Platforms State of the Union)
Locked and Hidden Apps:
- iPadOS 18 provides new controls that allow users to lock apps by requiring Face ID, Touch ID, or a passcode, and to hide apps from the home screen. Organizations can manage these controls on supervised devices. (What’s new in device management)

These features collectively enhance the functionality, customization, and security of the iPad, making it a more powerful tool for both personal and professional use.