Today: short walk-through

Today, I talked (again) about how to prepare for the exam and what to expect (to the extent it's fixed).

Besides, on request, I made a short ``flyover'' version of all of the lecture, thumbiing (quite fast) hrough the scipt, touching upon issues. I of course, could not ``explain'' all concepts, but more reminding that we had introduced this and that, and also sometimes talked about how that may be covered in the exam.

It's not meant as "pensum-video" like: everything I mentioned can be asked, the rest not. In particular, I think, in the video,  the material about top-down parsing is missing (I used a version of script, which is under-work, where I add more explanations; it will replace later the currently uploaded version). Of course it does not mean that top-down parsing is irrelevant.