This is a foundation wall and also a concrete masonry foundation wall. It uses small bricks and do not require formwork.(according to Ching 3.12)
Angel bracing: There is a timber and a steel stick in 45 degrees to connect the posts to make them stable. Once the bricks are put in and the wall is built they will be removed.
There's some spare space between the window and the structure in case that if the window is bigger than measured. There is a much thicker and stronger beam above the window because the window couldn’t take much load.