Now we have a table of contents
=== Image Map ===
Move your mouse over each IC to see a description, click on it to be taken to the PDF datasheet. When viewing an image in the gallery click the "More Details" bottom at the bottom right. Below the image on the File page you will see ImageMapEdit. Use that tool to place shapes over the image then when you are done copy the markup code in the box at the bottom and paste on your page using the "Edit Source" editor.