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+# $EPIC: window_rebuild_scrollback.txt,v 1.2 2007/02/19 03:20:46 jnelson Exp $
+======Synopsis:======
+[[window]] rebuild_scrollback
+======Description:======
+The [[window rebuild_scrollback]] operator causes a window's scrollback
+buffer to be rebuilt, even if it doesn't need to be.
+Normally, a window's scrollback buffer is rebuilt every time the number of
+columns is changed, either by resizing the screen, or by moving the window
+from a screen of one size to a screen of a different size.
+A window's scrollback is rebuilt by deleting everything that is currently
+in the scrollback, and then redisplaying all of the lines that are in the
+window's lastlog buffer.  This redisplaying is not done visibly, so that
+you would be distracted by the scrolling, but is done as an internal
+operation.  The scrollback position, hold_mode position, and top-of-window
+position are all saved across the rebuild.  If all goes well, you should
+not really notice anything.
+It is worth noting that the new contents of the scrollback buffer are
+limited only to those values contained in the window's lastlog; if the
+scrollback is large, but the lastlog is small, then resizing the screen
+//will// cause scrollback lossage.  If what was visible in your window
+before a rebuild is not available in your lastlog, it will not be visible
+after the rebuild; the window will be reset to the new top of scrollback
+(ie, as far back as it can go).
+======History:======
+This operation first appeared in EPIC5-0.0.7