On Jan 9, 2011, at 5:57 PM, David Van Horn wrote:

> Why are the "< Step" and "Step >" buttons enabled when there are no steps to 
> take in a given direction?  The "Couldn't find a step matching that 
> criterion" message seems awfully confusing for a beginner.  If the buttons 
> are going to be enabled, something along the lines of "There are no further 
> steps to take" and "There are no previous steps to take" would be better, IMO.

Okay, I've made these messages more specific, by parameterizing over the 
fail-message associated with each operation.  Let me know if you have other 

John Clements

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