It's in there, although slightly hidden:
Since we don't have chips lower than 0.001 BTC, your deposit will be treated as donation. Be aware that if you send 0.0015 BTC, you will receive one 0.001 BTC chip. Sending 0.0015 BTC twice will result in two 0.001 BTC chips.
When did this change? It used to be the case that sending 0.0015 BTC twice would result in three 0.001 chips.