Briefly, two frames are used to navigate. Frame #2, this one, displays results.
Frame #1, on the left, has the search routines. Instructions for each routine
can be displayed by selecting the icon "i"; and,
therein, if needed, more details instructions are provided with links to
specific sections of the book.
For a fast start, go to the left frame and click on
the link "0 - For disease search,
For additional, general instructions, select the link