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    Date:  6 AUG 1980 0132-EDT
    From: Moon at MIT-AI (David A. Moon)
    Going into 2-window mode, doing a m-x Occur in one window, then switching to the
    other window while leaving the m-x Occur typeout up on the first window does
    nasty things.  For one thing if the Occur typeout hits a **more**,
    selecting the other window with the mouse redisplays the window with the occur
    instead of leaving the typeout there.  Switching windows with c-x O on the other
    hand mostly leaves the typeout there but clobbers the top line.
The problem here is that anything typed or moused causes the more break to be exited,
which causes an end-page exception.

    However the real bug is what happens if you click the mouse on the Occur
    typeout while the other window is selected; it jumps to that line in the
    wrong window but doesn't update the display to indicate what it did.
    This then leaves the other window with point outside of its buffer.
    (m-< fixes it however).
This bug has indeed been fixed.