[http://
wh40k.lexicanum.com/wiki/Imperial_Dating_System]
I read this article over and I think it's very easy system to understand.
But I have a question about so called ' check number '.
Actually, I couldn't understand a word psychic contact.
For example,
[A 3 means that an individual or organization present was in psychic contact with a 2 source while the event occurred.]
In this sentence, what does psychic contact means? (in a strict sense)
I'd greatly appreciate for your input.
Sorry for my poor english