I was doing some windows of a new customer who had waited for her new windows before getting me in. Today was the third time, and I noticed on the front bedroom window was a sticker with the words 'emergency escape'. well, she came out to pay me while I was on the front, so I asked her about it. She told me that the window has a catch and it will open outwards to allow escape. These are the most recent new windows I've come across, and I'm wondering if it is a new directive. Has anyone else seen this?