Below is a screen shot of the diagrams open in Adobe Acrobat Reader. Notice the navigation bookmarks on the left and the annotations pane on the right. The cursor on the note icon also produces a pop-up of the note text.
Of course the user may zoom the central pane displaying the diagrams as desired, and various configurations of comments are available.
Click below for a PDF file containing the diagrams for 1 Corinthians 9. This file allows you to experience the actual functionality of the diagrams, navigation pane, and notes. It also includes most of the ancillary matter. To experience the file's full functionality, be sure to keep the bookmarks pane on the left side of the program window open, and also open the comments pane on the right by clicking on the Comment tool along the right edge of the program window.
Depending on your browser, clicking the button may display the file instead of downloading it, which will not likely provide full functionality. Within the browser window displaying the file, you should be able to find a button to download it for viewing within a PDF reader for full functionality. Or you can likely download by right-clicking the button and choosing the download (or Save Link As) option.