CLEAN : Ukraine protesters create 'fortress' to re

The video introduces the concept of 'mark' and explores its cool features.

What is the initial topic mentioned in the video?

• Introduction to a new concept

• Discussion about 'mark'

• Summary of previous topics

• Conclusion of the session

How does the speaker express their feelings about the topic?

• With skepticism

• With indifference

• With enthusiasm

• With confusion

What follows the expression of enthusiasm in the video?

• A new topic is introduced

• A technical demonstration

• A summary of the previous section

• A question and answer session