Presented by the image. Use the letters to at least try to find a picture, graph or map. The tree stands in a lecture instead of a letter having very tight until the letters slide will make listeners uncomfortable disgusted. Not interested in listening. Don't see what you're bopronyai, and finally it will sit while sleeping. Which, of course, everyone does not want to see a picture like that on ronya self luminous. Images used must have a meaning that is consistent with the purpose and importance of the slide.