Seltrac.. What are the RM "arrows" on the diagram

[paterson00]

I have been looking at the line overview at a tech terminal on have loads of questions.

What is the RM "arrow"? I have been told that they are the route secure indicators for the points but I don't entirely believe that, although having said that I hovered the mouse over a few and alot of them gave a clue that they may be RS's after all. At North Greenwich the ID if you hover over them says NOGRS9 for example but at West Ham they display WEHMD2 when you hover over them. Is anyone out there trained on this system yet who could shine some light on this?

[Tom]

I watched some of the TBTC testing last night from Baker St SCC.

NOGRS9 would suggest to me RS Sign 9 at North Greenwich.
WEHMD2 is existing signal MD2 at West Hampstead.

[Deleted]

RM stands for Restricted Manual. These RM arrows are 'hold boards' that RM driven trains have to stop at to ask permission to proceed to the next one. They also happen to be at the same locations as some Route Secure indicators, and when an RS route is set, the RM changes into a '1' or '2' or whatever the RS route number set is.

I believe the reason for this to be shown as a single 'signal' is to avoid clutering up the display.