Gradient Profile Question

[marky7890]

Hi,
I have managed to get hold of the gradient profile for the Cornwall mainline. However some parts have a square symbol with vertical lines below it, some are above station names others cover a section, and have arrows between. Here is a section of the graident file which the symbol is on:

Does anyone know what this symbol means?

Thanks,
Mark

 

[O L Leigh]

It relates to speed restrictions. There are three symbols which I will attempt to scan and post for you.

**EDIT**

Here you go.

O L Leigh

 

[The Planner]

You would not believe how often that old Ian Allen book is used within NR, LOL