[Chimera-users] Is it possible to undo an action?

Lesheng Kong lesheng at bic.nus.edu.sg
Wed Jun 30 17:57:45 PDT 2004

Dear Eric,
Thank you very much for your prompt reply!
With best regards,

On Jul 1, 2004, at 2:37 AM, Eric Pettersen wrote:

> On Wednesday, June 30, 2004, at 06:59 AM, Lesheng Kong wrote:
>> Hi,
>> Is it possible to undo an action in Chimera?
>> I notice that some actions in Chimera can be undid, such as "undo 
>> selection" or "undo move". Can every action be undid in Chimera?
>> For example, I colored a selection zone in a different color. But I 
>> want to undo this action and recover each atom's previous color.
> Hi Lesheng,
> 	I'm sorry to report that there is no general-purpose undo action in 
> Chimera.  For example, if you delete atoms (with 
> Actions..Atoms/Bonds..delete or the "delete" command), they are 
> permanently gone and can only be "recovered" by reading the original 
> structure file back into Chimera.
> 	My only suggestion here is that if you have put a lot of effort into 
> getting a particular look for your structure, that you save a session 
> so that you don't have to start from scratch if you make an error.
>                         Eric Pettersen
>                         UCSF Computer Graphics Lab
>                         pett at cgl.ucsf.edu
>                         http://www.cgl.ucsf.edu

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