When you are free of form and not confused, you are focused. To be free of form externally is 'Zen.' Not to be confused internally is 'meditation.' External Zen and internal meditation, this is what we mean by 'Zen meditation.
Reading texts is no substitute for meditation and practicing Zen. If you read a book about a place, and you want to go there, you don't keep reading the book. You have to travel. That's what practice is about. Traveling. Walking the path.