>> you suddenly realise that you'd like to use the number on the top of 
>> the stack as the *denominator*, not the numerator, or something like 
>> that. 
> 
> I think there's a button for *that* case, actually.

Division and subtraction are the obvious ones. (Oh, and exponent if 
there's a button for that.)

Thinking about it, a button to swap the top two operands ought to fix 
most problems you might have.

I also anticipate that being able to somehow "inspect" the stack might 
come in handy if you can't remember what you put on there already...

-- 
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*

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