Engine Oil Warning Light - how low?

[leadfoot6]

Its a long story, but briefly: I started the oil change without realising I didn't have enough oil on hand to finish. I was going to buy some oil the next day to finish but then there was a family emergency when my mum went into hospital for a week and I just forgot all about it while that was going on.
Later I drove the car three times (about 200 k's) before remembering.

What I find surprising is that the oil/engine light never came on. Never saw it flickering either.
When is it supposed to come on?

Is there any risk of damage while it was low like that? How would it behave if there was any damage?

As stated in post # 2, once again, if conditions are accurately represented by you, then there is no risk of damage, unless you subjected the engine to the (over)stresses that I also referred to in that post.

I don't believe that you would have done so.

Accordingly, sleep easy.