How does this basement window open?
Got it open:  I soaked everything with penetrating oil (inside &amp; outside).  Then I gently tapped the latch until it moved and the top opened up a bit.  After a bit of wiggling, it opened.  As you can see in the first pic, it's like drawing B.  However, you can pull it out and get something like drawing A, but once everything is fully lubricated and working properly, I'm not sure it it'll stay put.
Also, there's a &quot;keyhole slot&quot; in the hinge to allow you to take the window pane out (see second pic).