song and dance to prevent hdrftr undo crash
CVS: ----------------------------------------------------------------------
CVS: Enter Log.  Lines beginning with `CVS:' are removed automatically
CVS: 
CVS: Committing in .
CVS: 
CVS: Modified Files:
CVS:    src/text/fmt/xp/fl_BlockLayout.cpp src/text/fmt/xp/fv_View.cpp 
CVS: ----------------------------------------------------------------------

I still encounter a crash as follows:

new document
type 'ff'
press Ctrl-[
type 'gg'
click back on main doc
type 'hh'
Hit Ctrl-Z a few times.  Boom!

In related news, I think that getSavedPosition(), clearSavedPosition()
and markSavedPositionAsNeeded are overused.  I think we could get away
with not using them during hdrftr operations; perhaps they are needed
in the ruler, I'm not familiar enough with that code to say for sure.

pat

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