[O] feature request

[Jude DaShiell]

A little data destruction protection.  I put together a table and had to 
destroy all copies of it after having tried to set up averages for a 
couple columns.  The averages didn't work and data got zeroed out and I 
lost an entire column of data that way.  One of my problems I'm sure was 
caused because I tried data gathering first then tried modifying the 
original table and adding the formulas later.  Next time I attempt 
anything with org and mathematics, I'll write my data set down in braille 
and ought to have done that with this data set as well.  What might have 
helped here a little is if a column is going to be put into existing 
columns the column inserts rather than overwrites any column that might be 
there.  The broken table I ended up with had six columns and two of those 
were single space columns out to the right with nothing in them.  There 
ought to have been before I did anything with formulas at most four 
columns in the table.  I did enter time stamps in as two separated date 
and time fields originally then when I read what all could be put into 
time stamps, I consolidated those first two columns into a single time 
stamp column.  I don''t know if that consolidation did further damage or 
not.