Why duplicate things that are in Sigil itself. You can easily add links using Sigil (no need to type them by hand).
Second, if you are using the latest PageEdit, there are two modes of operation. Once is Edit mode (the default) which will allow you to edit and change things, and one for preview mode, where editing is temporarily disabled but links then become active and you can navigate around in PageEdit using those very links. Hitting the icon will toggle the mode so editing is just a single icon click away.
|