Invisible invisible insertion point in field - solved but not resolved BZ 1734

[David Wilkinson]

First prize is shared by Sarah and Chipp - overlapping group.  Thanks 
guys. Surprisingly BZ returned Key Ray's report first hit, and it is 
just about on its first birthday.   Too much of a rewrite required 
for the time being, unfortunately.

Sarah was also right about the margin/text offset/vscroll thing, but 
I seemed only to be able to effect any obvious change with left and 
right margins - so I made the editbox taller to show the ascenders 
and descenders.

So that makes the Aussies one up in the Series already! 

ref: RevOnline user227 Table Field Experiment