[r-t] Candidate definition #10a

[Iain Anderson]

Don Morrison wrote:

> [...] The number of 
> rows contained within B is its length.
> [...]
> The length 
> of the touch is the sum of the lengths of its constituent blocks.
> 
> A touch is a peal if it has length >=5000, [...]

Peal length is number of rows, not changes.
Is that an oversight or a genuine proposal?

A) The length of the touch is the sum of the lengths of its constituent
blocks plus one.
B) The length of the touch is the total number of changes. (TODO: Define
change.)