Trying to find a balance in staff sizes

[OCTO]

I use 6.8mm as a standard for all parts and NE size (240*320mm).
It is a plenty of space, and not difficult to read.

[NeeraWM]

I use 6.8mm as a standard for all parts and NE size (240*320mm).
It is a plenty of space, and not difficult to read.

My ignorance: what is NE size? I mean, is it the shortening of something?

[OCTO]

I use 6.8mm as a standard for all parts and NE size (240*320mm).
It is a plenty of space, and not difficult to read.

My ignorance: what is NE size? I mean, is it the shortening of something?

New Edition, as promoted by Schott.

[NeeraWM]

New Edition, as promoted by Schott.

Never heard of it!
Is some kind of Wiener Urtext collaboration between Universal Edition & I think Schott or ... what else?