RE: [External] : Interactive option for command application

[Drew Adams]

> What would be a convenient way for the user to select whether a change is
> to be made to
> a buffer or to a frame?  Currently the user has to enter "yes" or "no' to
> the question
> to set the boolean flag.  Generally, users would perform the change only
> upon the buffer,
> and only occasionally upon the frame.

Have a prefix arg use the frame. No prefix arg means use the buffer.