In the Settings menu on the top right of the Action Bar, you can customize your Curve experience by setting your personal app preferences. To access the input options for your stylus pen, tap the Input Tab in the Settings menu.
Available only on iPad and iPhone, the Input window gives you access to a variety of third-party tool pairing options such as:
The double-tap option
The Apple Pencil double-tap option will only appear when you have a second-generation Apple Pencil paired with your iPad.
By default, the double tap gesture will switch between your current tool and the eraser, but you can customize this option by going to the Settings App on your iPad.
The Scribble integration
Linearity Curve supports the ability to use Scribble with Apple Pencil.
You can use your Apple Pencil to write in any text or numerical field where you can enter information. This includes naming Layers, Artboards, and documents or entering type using the Text Tool. Any gesture available in Scribble applies in Linearity Curve. This includes circling to select, scribbling out to delete, etc.
To use Scribble, you will need iPadOS 14 or higher and use an Apple Pencil.
Linearity Curve requires Bluetooth permission for many external devices, such as Apple Pencil pairing and Wacom Bamboo Slate paring. Set this switch to on to enable these features.