Basic Navigation and Offline Browsing
This document gives you basic information on how to get around in
HyperLink, both on-line (on the Internet) and off-line (scripts and
HyperLink applications provided on disk). In addition, special notes
on off-line browsing are included in this document. Internet access
with HyperLink is documented in other sections of this manual as well.
Disk drive management
HyperLink is a one-drive system, although it does not need to start from
device 8. When you start HyperLink, the disk drive it boots from becomes
the primary disk drive, and all disk access operates on that drive, including
loading scripts and images, loading external files, downloading files to
disk, and executing DOS wedge commands and displaying disk directories.
Getting around in HyperLink
If you have used HyperLink 2.0 or any previous version of HyperLink 2.5,
HyperLink 2.5e is identical except for additional keyboard commands.
HyperLink is not really a document viewer at all, but instead an interpreter
for a programming language called LinkScript. The HLPP proxy used for web
browsing converts HTML into LinkScript for HyperLink to execute. When you
view HyperLink pages, you are really running small programs that tell HyperLink
what to display.
Here is a screenshot of HyperLink showing a typical document. At the
top of the screen is a button bar; your pointer is in the upper left quadrant;
and two scroll icons are on the left.
The document text and any inline images (only in offline documents) appear
in the text area. Like web browsers, some portions of the text area may
be clicked on. These areas are the same colour as the pointer and scroll
icons. These portions of text will link you to other documents, which may
be online or offline. If you click on a Web URL starting with http://,
HyperLink will automatically try to connect to the Internet if you are not
presently connected. Refer to the section on "Browsing the Web with HyperLink".
The scroll icons allow you to scroll through the document. Because you
are really executing a small program, they act more like stop and run commands.
The scroll down icon continues the document, functionally displaying the
next page. The scroll up icon starts the document from the beginning (for
technical reasons, it is not possible to scroll backwards without starting
The five icons on the button bar are identical to those in HyperLink
2.0 and are as follows:
As in HyperLink 1.0 and 2.0, there are short-cut
keys. Press F1 for help, F3 to open a document (registered users only),
F5 to go home and F7 to back up. Thus, to run a HyperLink-based application,
just insert the disk and press F5; to get immediate online help, just press
The green back arrow takes you to the last document you visited before
this one. HyperLink remembers a chain of up to ten documents.
The light blue opening folder icon allows you to enter a filename or URL
to open. This option is only valid for registered users. Users of the
unregistered evaluation version cannot enter filenames or URLs directly,
but may only click on links. If you enter a filename of a LinkScript
file, the lnk. prefix will be added for you automatically. If you
enter a Web URL starting with http://, HyperLink will automatically
try to connect to the Internet if you are not presently connected. Refer
to the section on "Browsing the Web with HyperLink". If you make a mistake,
you can press F7 to cancel.
The grey home icon takes you to the home script on the current disk. This
allows you to launch applications written for HyperLink just by inserting
their disk and clicking the home icon. When you go home, the history of
places you have visited is cleared, but your connection to the Internet
is maintained if you are currently connected. To go back to the HyperLink
home page, make sure the HyperLink disk is in the primary disk drive and click
the home icon.
The white Computer Workshops diamond icon takes you to the information/about
script on the current disk. This allows you to get information about the
scripts on the disk you're using. To view the HyperLink credits and information
page, make sure the HyperLink disk is in the primary disk drive and click the
about icon. To go back, just click the back icon to return to the document
you were originally viewing.
The pink question mark icon takes you to the online help facility on the
current disk. This allows you to get online help with the disk you're using.
To view HyperLink's built-in manual, make sure the HyperLink disk is in the
primary disk drive and click the help icon. To go back, just click the
back icon (repeatedly if needed) to return to the document you were originally
HyperLink 2.5e provides additional keyboard commands:
Offline browsing with HyperLink
HyperLink 2.5e is 100% compatible with HyperLink 1.0, 2.0, 2.5 and 2.5a
scripts and applications.
To use any application designed for HyperLink, simply insert its disk into
your primary disk drive and press F5 to start its home script. Both the
unregistered and registered versions of HyperLink 2.5e can read and execute
any application designed for HyperLink without restriction.
Offline applications can display I3-format inline images, can accept
queries and may include their own built-in online help facilities. To view
the online help in the application, press F1. In addition, offline applications
can also execute external machine language programs to play music, do animation,
or even create entire documents on the fly.
To run a specific file on a disk (registered users only), press F3 or
click the open icon, and enter the filename. The lnk. prefix will
be added for you.
If you find that inline images take too long to load, you can stop them
from displaying by holding down the COMMODORE key as the page is displayed,
or you can toggle them off using CTRL-I. The border will flash blue if
inline images are off, and yellow if they are back on. If inline images are
off, the .il tag that represents the inline image will be displayed
instead of the image itself.
A note on security: Because offline applications are permitted
to install and run their own extensions, it is possible for an unscrupulous
programmer to use them to cause damage to your system. If you don't trust
the source of a script, you can use the CTRL-K key combination to toggle
on and off whether a script may alter memory or load its own extensions.
By default, these operations are allowed. Pressing CTRL-K once will disallow
these operations and the border will briefly flash red, and any scripts
that try to use active operations will display <Active> in the
text area when such commands are encountered. Pressing CTRL-K again will
again allow these operations and the border will briefly flash green. We
would like to stress that such programs are rare, if not non-existent,
and this measure is almost never needed; also, all of the scripts from
Computer Workshops are fully tested and may be enjoyed safely with these
operations enabled (the default).