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Re: Copy input and User Defined Variables


On Oct 10, 2006, at 6:12 AM, Bubba wrote:

> Hello I'm new to Mathematica. I have two questions
>
> Q1: Is there any shortcut for copying the previos input. In another system you
> hit the arrow-up key and voila. I know that you can use % but that is
> reffering to the output not input. I want a copy of my *input* so I  
> can
> change it. I do not want to go back to my previos input and change  
> that
> since I want a new fresh copy of the input. I know of course that you
> can copy and paste but that takes to much time.

You can use In, see the help browser for details.

> Q2: I want to see all the symbols I have defined myself. If I enter ?*
> I get a list of all the symbols in Mathematica and at the end I see my
> symbols. But I only want to see my symbols and not Mathematicas. Is
> there a way to accomplish that?

Define your symbols in their own namespace using Begin.  You can then  
search on symbols in that context exclusively.

Regards,

Ssezi


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