And one small thing ---

[Katariina Ervasti <cat@xxxxxxxxx>]

--- that I've always wondered is:
if the homecell is such an important cell why 
does it look like an ordinary cell? There's no
text (e.g. 'HOME') in it (unless you don't write
it) and it's white, like any cell.

If you delete this cell by accident, you have to
rescue it by going to d.cellcreation and connecting 
it again. 

Yet, if it looked radically different, you would 
probably not delete it that often. (I don't always
remember to write 'HOME' in it, and, yes, I've deleted
it many times by accident.)

cat