When a vector image layer is selected, you can use almost all of the same tools to draw on this layer. The main difference is that all your drawings and strokes are generated mathematically. As a result, you can zoom or enlarge your drawing without getting any “pixel” (aliasing) distortion effect. When you change a color in the Colors palette, the color is automatically changed in the vector image when the object is still selected. The points of vector curves can be adjusted using the finger tool. That makes vector images ideal for finished “clean” drawings, while you might prefer bitmap images for quick drafts or more complex & conceptual imagery.
NOTE 1 – The Pencil Tool is intended for curves which will not be displayed in the final drawing. Hence, these invisible curves are only displayed as dashed lines, which you can hide and show using the “Show invisible lines” button in the display palette. To draw visible lines, use the pen or polyline tool.
NOTE 2 – For vector images, the Paint Bucket Tool is tricky to use, primarily because of the behavior it inhibits when used (Example: Two seperate contours need to have overlapping anchor points in order to produce a successful fill – which means zooming into the crossing paths to be sure they overlap; Also when initially filling an enclosed contour any other enclosed contours inside of the principle contour in question needs to be removed first in order to fill properly, after that you can restore the additional contours and fill them thereafter.)