I've just done a short video demonstrating an interesting extension to the inspector in Cincom Smalltalk. I have to note the easy use of this is not (yet) part of the product, and it won't appear sooner than the release after this one.
So with that caveat, what am I showing off? A capability the inspector has to show computed fields. You can do that now, but the extension I'm showing here makes it really easy. Hat tip to Travis Griggs, Sherry Michael, and Bob Westergaard for the work that has gone into this.
You can get the video as a WMV (Windows media) or as an MP4 (QuickTime).

You can also see it on YouTube:
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smalltalk, inspector, development tools