Drawing board use, presentation optimization

There's a function to use the frame as a page in a PowerPoint presentation. I want to say that this design is not pure, because using the frame to organize knowledge and will be something for the presentation is actually two ideas, should be separated, in the drawing board function to add the view function, that is, I myself to determine what level of zoom to retain the view. 【Refer to "FOCUSKY WanCai Presentation Master" this is I think and graphic thinking is more compatible with the presentation of ideas] this is not only easy to quickly locate the fixed position of the drawing board, but also in the case of the original canvas does not affect the expansion of functionality

Reference to this picture, I can define the view through the blue box [there are big and small, but when I speak he is a page], so that in a large framework can be free to control the pace of the speech, but also to sort out the level of each content