mathed feature request...

[Angus Leeming]

André,

I seam to remember you saying (somewhat rashly!) that how was the time to 
make mathed feature requests. Of course, I may have been dreaming this in 
which case please ignore this ramble totally!

It is currently impossible to edit math labels once they're created. So, two 
questions:
* why not just use a regular InsetLabel?
* if not, can you make them editable somehow?

Angus