Instructions for using the AHA tutorial
These instructions explain how to use the AHA tutorial on-line,
through a World Wide Web browser connected to Internet (either permanently
or using a dialup connection).
We have separate instructions on how to study
this tutorial off-line .
This tutorial assumes you are using a WWW browser capable
of displaying documents that comply with the HTML standard,
including
cascading style sheets
and Java applets .
If you are using an older or incompatible browser you
may find that some information is not displayed correctly
(or not even displayed at all).
We also assume you are using a color monitor, and have configured
your browser correctly.
Please read the
instructions for Netscape Communicator
or the
instructions for Internet Explorer,
depending on the browser you use. If you are using Netscape Communicator
version 4 (e.g. 4.7) or Internet Explorer version 4, you should be safe.
Older versions of these browsers most certainly do not work
properly for this tutorial. The newer Internet Explorer versions
5.0 and 5.5 also do not behave properly.
Your mileage with other browsers may vary.
What you did to get to this page is called following a link.
Reading this tutorial involves this equivalent of turning pages.
There are a few differences though:
- There are no real pages, and of course no paper.
- You cannot easily jump directly from a page to any arbitrary other page,
like you can with pages in a normal book.
Some words or phrases appear in a different color.
They are called link anchors.
If you click on them with the left (or only) mouse button
(like you did to get to the current page)
you jump to a specific page, tied to that anchor.
This operation is called following a link.
If you wish to go back, you click (with the left (or only) mouse button)
on the "back button" which most browsers display in the upper lefthand corner
of their window.
This button might look like
.
Whenever you go back to a previously read page the browser must
(conditionally) request this page again from the server.
The
instructions for Netscape Communicator
and the
instructions for Internet Explorer
explain how to ensure that this happens. (Note that the latest browsers
from Netscape (version 6) and Microsoft (version 5) never request a page
from the server when you use the back button. We are still working on
a fix for this problem.)
- With some browsers, when you click on an anchor, using the middle
mouse button, you also follow the associated link,
but a new window is created,
so the old and the new page can be viewed side by side (on a large screen).
The "File" menu may contain a "close" option, or there may be a "close"
button (e.g. looking like
)
which you can use to get rid of extra browser windows you no longer want.
If you use this browser feature, you may confuse the software that
dynamically generates the link structure for this tutorial.
So use this at your own risk.
- If following a link would lead to a page which you have already
read, the color of the link anchor changes.
The color is determined by the AHA system, not by the browser.
- The pages in this tutorial can be recognized by means of a standard banner
(and footer) and a background pattern which is faintly visible.
The banner includes a progress report,
which is individualized for every user.
It not only tells you how many (out of how many) pages you have read,
but also provides access to the list of pages you have read and the list
of pages you have not yet read. This looks like:
(read pages,
pages still to be read).
- The tutorial contains links to documents located elsewhere,
throughout the whole world. These documents are not part of the tutorial and
can be recognized because they lack the standard banner, footer and background.
Links to external documents also have a different color than links to pages
of the tutorial.
- Link anchors in this tutorial only appear when you are ready for
viewing the page associated with these links.
For example, you will notice that after reading this
instruction page (for the first time)
a few more link anchors appear in the welcome page and the table of contents.
This is a result of the adaptive features of the AHA system.
When you revisit pages the content of these pages and the link anchors
may be different from a previous visit.
If you have not configured your browser properly these adaptations such
as extra link anchors may not appear.
- You can configure the AHA system to change the its
perception of your knowledge.
This is done through the knowledge settings
"button" which is part of the page-banner.
- You can configure the AHA system to change the colors
of link anchors.
This is done through the color settings
"button" which is part of the page-banner.
In order to get back to the previous (index) page, you must now click
on the "back button".
If there are still no (visible) links to some pages but when you press the
"reload" button these links appear, you should change the browser
setup so it will always verify whether documents have changed.
This is explained in the
instructions for Netscape Communicator
and the
instructions for Internet Explorer .