Vector graphics illustration app. Expression is a vector-based stylish drawing and illustration software that continues to re-define vector graphics. Whether you are a veteran professional illustrator working on print-quality illustrations, a web designer building the most dazzling web site or a budding artist eagerly experimenting with various styles and techniques, you will find Expression 3 an indispensable tool for your creative tasks. It brings you the best of both worlds S the richness of pixel-based painting software and the convenience and editability of vector graphics.