This was discussed just this week:
http://www.nabble.com/-R--deleting-an-arow-added-to-a-graphic-t2228973.html
On 9/10/06, David Arnold <dwarnold45 at cox.net>
wrote:> All,
>
> What is the standard procedure for removing a graphic from an
> interactive plot? For example, suppose I use abline to add a line,
> then later decide that I want to remove it?
>
> Thanks.
>
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