Lots of buttons (are they now called zones?)

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Article #1463

#1463

From: Glen Whitney
Date: Wed, 20 May 1992 17:15

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Is there any way to save a buffer with lots (hundreds) of epoch buttons
(zones in 4.0? I only have 3.2 so far) so that it can be restored quickly
(in a later invocation of epoch)? Or is the only thing to do to write out
the begin-position and end-position of each of the buttons, and then use 
add-button over and over? The difficulty with this is that the first few
buttons add quickly, but the procedure gets slower and slower as there are
already more and more buttons in the buffer. Is there any way to add a
large number of buttons at once in a time linear in the number of buttons,
as opposed to the approximately quadratic behavior I am observing
from add-button used again and again?
      Thanks for any help,
          Glen Whitney
          UCLA Math Dept.

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From: gwhitney@amalthea.math.ucla.edu (Glen Whitney)
Subject: Lots of buttons (are they now called zones?)
Message-ID: <1992May20.171551.15662@math.ucla.edu>
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Organization: UCLA, Mathematics Department
Date: Wed, 20 May 92 17:15:51 GMT
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