Although linework layers are vector based this does not make PaintTool SAI an equivalent replacement software to those based on vector graphics such as Adobe Illustrator.If you merge a Linework Layer with a normal layer, it will lose its vector properties.Linework layers have unique merging and resizing behaviors.The Linework Layer Menu includes unique tools such as the pen, weight, color, edit, pressure, curve, and line tool.These manipulation options can be found primarily within the Edit submenu. Control and Anchor points allow you to manipulate paths without destructive edits.Lines in linework layers are defined as “paths” and consist of control and anchor points.Linework layers are vector based, while normal layers are raster based.Linework Layer Move and Resize Properties.