When you have two windows X and Y showing different sections of
the same buffer B, then open a different buffer in X, and then
show B in X again, the new point in X will be the same as in Y.
With pointback-mode, window points are preserved instead, and
point will be where it originally was in X for B when you return
to B.
To install, copy pointback.el to your
load-path and add to your .emacs:
(require 'pointback)
Then toggle the mode with M-x pointback-mode RET.
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