I read the chm and I still don't understand the difference between OpenLimit and LimitEntry.

OpenLimit documentation:
An open order opens a position at the specified market rate or at a more favorable rate in case such rate is available on the market.

LimitEntry documentation:
A limit entry order with a buy direction is filled when the market is below the rate specified in the order.

So, if I want to open a buy position (for example) then what would be the difference ?