Venn diagramming using visio

I work with a programmer who is really talented at hand-drawing Venn Diagrams. Since my handmade sketches are no where near as clear to read as hers, I turned to Visio to sketch up some diagrams.

Here's how to draw a Venn Diagram with Visio:

1. Draw ovals
   
2. Select ovals, then format --> fill, and change Transparency to 50% (adjust according to taste)
   
3. Select Shape --> Operations --> Fragment
   
4. Shade each fragment to indicate designation
   
5. Add a legend if necessary and use format painter to repeat shading.

For a demonstration of the value of this tool, refer to the diagram I just whipped up this morning. I'll submit it to graphjam for posterity as well. And fyi - if you want to avoid the Visio gymnastics, check out graphjam's Venn Diagram builder.