player filter?
How can I activate a trigger when the orange or the blue bot gets there? What sort of filters do I need?
I want to activate a checkpoint (move the spawns) when both players get to a certain area.
Oh i see, thanks for the tip sir, i have also wondering about it lately but now already got clarify...
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The intellect of the wise is like glass; it admits the light of heaven and reflects it.
Augustus Hare's medieval maces
Thank you 
It would be so great to have one place where everything is written down (like a book), so I wouldn't have to ask silly questions like this. Well.. expect me to come again 
there's the valve development community! check the link to the portal 2 mapping wiki 
That has a hell of a lot information!
I know about that one. It is helpful, but I wouldn't say it's really beginner-friendly. Sometimes it's hard to find stuff on it..