Yes, but he did not know how to lock the latch....his family did though. Do you think he would have left a note for BW telling her to secure a lock on the window, if he knew how to lock it...I'm afraid the window locking through a umpteen bangs from the outside was never witnessed by the jury, other that the family and one officer that wasn't paying that much attention...
I am talking to you Hartley....having a debate, is that not what you are here for? Sorry if I upset you...I shall ignore you in the future. 
I believe he did know how to. The jury believed that he did know how to. The jury believed that he told Julie that he did know how to.
Nobody else knew how to, which also helped to limit the suspects to two, along with Ralphs alleged call to Jeremy.
You haven't upset me, I am completely unupsettable, I'm just a bit bored of some the point scoring at times, that's all, no offence intended.
If people can't accept that others may have a different view then I'd suggest the problem is with them.
