On Jun 8, 8:18 am, PhilD wrote:
Well, what DOES it mean?

An el is a line built high above ground level as a way to get past
existing roads and structures without tunnelling or too much
demolition. My own personal definition would exclude anything that
requires dedicated land (so most brick viaducts are out). I don't know
of any bits of LU that fit this definition, but most of the DLR does.

U