locking cells

["Andreas J. Guelzow" <aguelzow taliesin ca>]

Hi,

I could leave it alone and extended the sheet manager 
(format->sheet->manage) to set protection for individual sheets.

It would be very easy for me to make the required changes in commands.c 
to enforce protection for the various actions that may change cells.

But since Floris was going to work on this, I want to make sure that we 
don't collide (any further).

Of course, we could split the work. It would be very helpful if someone 
would compile a list of actions that currently change a locked cell (but 
shuldn't) so that we basically can check any progress made in this area.

Thanks

Andreas
--
Prof. Dr. Andreas J. Guelzow
http://www.math.concordia.ab.ca/aguelzow