Navigation within a module is done by clicking on the appropriate icon in the control panel at the top of each page.

To move through the pages of a module in a natural sequence click on the 'forward-one-page' arrow. Otherwise select one of the other options by clicking on the appropriate box.

To move to a specific page in a module click on the title of the page in the left-hand margin.

For some modules a spoken explanation is available and a loudspeaker icon appears in the bottom right-hand box in the control panel. Clicking on this box should produce the spoken words.

The text of the spoken application may also be available. Clicking on the left-hand bottom box in the control panal should produce a page with the text. Clicking on the same icon in the text page takes you back to the original page.

Use the button in the left-hand margin to return to the Smart homepage and the button to move to the list of available modules. takes you to this page.

If you have difficulties with the material at any stage please let us know by clicking on the Comments icon in the control panel (or the Feedback option above), and type in your remarks in the text box which appears.

Some pages of a module may provide links to pages with more detailed explanations about a topic. These are indicated by a downward arrow below the control panel. Clicking on this icon may lead to several linked pages which can be followed through by means of the 'forward-one-page' arrow. Eventually you will be taken back to the page from which you started.

An explanation of highlighted terms in the text can be got by clicking on the word. To return to the page from which you came click on BACK in the browser toolbar.

Pointers to published works on the topic are given in the list of references which can be accessed from the panel on the left of the browser.

The names of authors of modules are given in the first page of a module. If their address is provided then you can contact them directly by email.