Ключевые слова: academic, announcement, audience, background, briefing, business, businesscoaching, center, concept, conference, congress, convention, cooperation, copy space, corporate, education, educator, entrepreneur, event, explaining, forum, gesturing, group, hall, information, institute, knowledge, learn, lecture, listeners, manager, meeting, participants, people, presentation, professional, public, screen, seminar, sketch, speaker, speech, study, studying, teacher, teaching, training, university, workshop,