There is also a pen movement and pressure smoothing feature which can be manually configured as to how much effect it has. This allows one to add shading and highlights to an area without creating new masks for the additional layers. In addition to this, layers can be masked by clipping them to a lower layer. Work can be done on separate layers, which can be grouped and have opacity masks. There is also a set of vector drawing tools intended for inking, which, like the raster tools, can be configured to be pen pressure-sensitive. Various raster drawing tools are implemented, such as the Airbrush, Watercolor, Pen, and Marker, which can all be easily customized, and stored in slots in the user interface of the application. Colors can be stored in the swatches panel. An application-wide scratchpad (which can be used as a color mixing panel) is provided, which is saved between sessions. It is also possible to open multiple viewports to the same document. The toolbar on the top part of the screen also includes a button to mirror the drawing view without mirroring the actual drawing. The drawing canvas can be both zoomed and rotated using the sliders on the navigator or the hotkeys configured on the keyboard. The user interface allows multiple documents to be opened at the same time. SAI is a lightweight painting application. ( February 2023) ( Learn how and when to remove this template message) Unsourced material may be challenged and removed. Please help improve this section by adding citations to reliable sources.

Double-clicking the layer will let you change it's name.This section does not cite any sources.

Under the new set button there's a button to clear the layer you have selected and next to that you can press the trash can to delete the layer entirely.

Underneath the new layers there are two ways to merge a layer into the one beneath it.

Next to that is the 'New Layer Set' button, pressing it gives you folders you can put groups of layers in and control them as if they're one.This gives you a special kind of layer that has a different set of tools.

Next to the new layer button is the 'New Linework Layer' button.

Above the list of layers there is an icon of a blank page with a folded corner, clicking that will give you a new layer.

On each layer there is an image of an eye, clicking the icon will toggle the visibility of the layer.

They allow you to change parts of an artwork without touching the rest and change how things overlap in your artwork. On the side of your window, there should be a large grey box with a small purple box inside it that says 'Layer 1.' Layers are like painting on sheets of glass and placing the sheets on top of each other to make a picture.

Paint tool sai brushes