rangesets

[A.V.Kuznetsov]

Thank you, Tony!

> 
> The short answer is (a).

One more sample, that Nedit attracts an optimal solution! 

> Does that help?
 
YES! I think, this question may be clarified in manual.

One useful mode is absent among rangeset modes.
It can be named as destroy mode: any changes inside a range
or at it's boundaries remove it from the set.
For example, rangeset is used to highlight misspelled words,
you find a typo and correct it retyping a word. Highlighting
must be removed, but this cannot be done using existing modes.

Is it possible to implement destroy mode in future?

Alexey