Neo can u put together a better cheat sheet that explains the naming conventions with brackets and $s. I keep finding I'm lost for when to use what. The help page is a bit slim on examples and $ usage seems to vary depending on the function in question.

Also, it would be really helpful if you could expand the bracket functionality to be nested..... e.g.

$((Var1).(Var2)).Property

OR even better
$((Var1).State_(Var2))

So we can have something like

Var1 = Locomotive Name
Var2 = Index to a list of variables whose name starts with "State_" 

example in the second suggestion. 
Var1 = BR_50-1
Var2 = 2

Would point at $BR_50-1.State_2

 

NOTE: Implementing the latter would also provide us with a crude, but much needed method to implement arrays of variables.