Oh and also how are those blue link signs made ?
But how do I know coordinates ?
oops i meant "sim.signs.new('textexample',400,400)"
in the console you can do "sim.signs.new('textexample,400,400)" without the quotes. This creates a sign that says 'textexample' at x:400,y:400
Go into tools (the little lightbulb in the bottom right corner), and signs should be the second one to the left.