With "special links" you can visually place links to another frame, to a popup Window, to an Internet address, and much more, even using “anchors” inside the page.
The Opf / Mobi / Epub formats do not allow (for their constraints) most of the "special links": in this case the link will act just like a
normal link (it automatically becomes a normal link).
This tab permits you to insert a link to an anchor. An “anchor” is an invisible bookmark that can be placed anywhere on a page (with “Insert >Anchor”).
Please notice that some “special links” will work only in “read only” mode, and will not work properly while in “editor” mode.