[fractallyte]

Illustrations were created using a vector graphics engine, and then rendered as a bitmap. The brushes looked 'painterly', but they were editable and scalable. So it was possible to take a postage-stamp sized picture and scale it up to billboard size without any loss of resolution.

Watercolor paintings that were actually vectors? Yes, that's exactly what it offered!

There was also some architectural trickery that enabled huge pictures to be loaded into the application on machines with limited RAM.

The nearest software to this now is Synthetik Studio Artist (https://synthetik.com/).