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- "BROWSING THE WORLD WIDE WEB" FOR COMMODORE USERS:
- Offered to an adoring and grateful public by Glenn P.
-
- The following information is current as of Monday, July 3, 1995.
-
- REQUIREMENTS: Access to Telnet, and access to a terminal program
- capable of VT-100 emulation.
-
- CAUTION: No information is available concerning access to the Web
- in 40 columns. A screen width of at least 80 columns is recommended.
-
- NOTE: This text assumes that you have an account on the CompuServe
- Information Service, and that you use a Commodore-128 and thus have
- no access to CompuServe's CIM program (or any other GUI-based
- Internet access program). Nonetheless, the information furnished
- below should be readily adaptable by the reader, even if these
- assumptions are not wholly correct.
-
- -=-=-=-=-=-=-=-=-=-=-=-=-
-
- PREFACE:
-
- Commodore users are at a serious disadvantage when it comes to
- browsing the World Wide Web -- we lack a graphical interface with
- which to do our Browsing. And CompuServe itself is of no help, as it
- does *not* support Commodore computers. What to do?
-
- Well, fortunately, Commodore users *DO* have access to Telnet, which
- is perfectly usable in ASCII interface. (Whether the services
- accessed via Telnet allow simple ASCII translation is of course
- another matter!) In my own case, I have found a Web Browser,
- accessible via Telnet, which offers TEXT BASED Web Browsing, which
- obviates the need for a graphical interface. The downside to this is
- that it DOES require VT-100 terminal emulation; the better this is
- implemented on your system, the better off you will be.
-
-
- A LITTLE BACKGROUND:
-
- To access a given location on the Web, you need to know its address,
- or "URL". (I forget exactly what that stands for; I *think* it's
- "Uniform Reference Link", but I won't swear to it.) URL's are those
- those funny-looking Internet-style addresses you see floating about
- the USENET Newsgroups with "http://" prefixes. The "http" stands for
- HyperText Transfer Protocol, because what you actually access on the
- Web is what is know as a "Hypertext Document". Most "http://"'s that
- you find on USENET and such are called "Homepages", because each one
- is a starting point for a given set of hypertext documents, set up
- by a single company or individual.
-
- Why "hyper"-text? Because you do more than just READ it. With a
- graphic interface, you'll get pictures. (We won't, alas, since we'll
- be using a text-only Browser, but bear with me.) More importantly,
- however, the text you read will be sprinkled with what would at
- first seem to be simple footnotes -- numbers enclosed within
- brackets: [1], like that. In fact, they ARE footnotes -- in a way.
- But THESE "footnotes" can turn out to be whole BOOKS! That's because
- they are in fact pointers, or "links", to OTHER hypertext documents,
- located elsewhere on the Web! When you enter the number of such a
- Link, you interrupt your reading of the CURRENT document, and start
- reading the new one; when you're finished with that, you can return
- to the first document at the press of a single key -- or, if you
- prefer, you can follow other links contained in the NEW document,
- going even further afield! Thus you can follow a line or thread of
- interest to wherever the Web will take you, as far as you please to
- go, to get to your point of interest.
-
- This "interlinking" is the precise reason why it's called a "Web"!
-
- The interesting thing is that, apart from the FIRST document, you
- need never know the address of any of the other, subsequent
- documents at all -- that's all handled automatically by the Browser.
- It's something like CompuServe's menus -- each choice you make
- presents you with more choices! No WONDER the Web is so addicting!
- And we Commodore users can access it!!!
-
-
- ACCESSING THE WEB:
-
- As discussed above, to get on the Web, you need to Telnet to a Web
- Browser, and you'll need VT-100 terminal emulation. Start by
- entering GO CIS:TELNET at the "!" prompt nearest you, to access the
- CompuServe Telnet Menu.
-
- But DON'T make any choices yet! We need to set up VT-100 emulation
- *before* we enter a sitename.
-
- That's because CompuServe communicates, invisibly and transparently,
- with the remote host as your connection is established, and informs
- the remote host of a few things about you -- such as the size of
- your screen, and the type of terminal emulation you are using. I
- didn't know this the first time I used Telnet to access the Browser;
- I figured I could switch to VT-100 once I got there. In fact, unless
- CompuServe thinks you're in VT-100 mode already, it'll tell the
- remote host you're using something else -- whereupon the remote host
- will "harrumph" and dump you ("Connection closed by foriegn host" --
- don't you just love that one?) unceremoniously back to the Telnet
- menu again!
-
- So here's what to do: (1) Type SET TERM VT100 at the Telnet menu
- prompt, but DON'T PRESS RETURN YET. (2) Set your terminal program to
- VT-100 emulation. (3) NOW you can press RETURN. You'll get the
- Telnet Menu again, but now you will be in VT-100 emulation mode.
-
- We are now ready to enter a sitename.
-
- Select item 8 (Access specific site) from the menu. Then, when
- prompted for the site name, enter:
-
- fatty.law.cornell.edu
-
- This is the sitename of the Web Browser we'll be using.
-
- Press your RETURN key after the sitename. Ignore the disclaimer and
- other blather -- press RETURN again -- and the actual Telnet session
- will begin.
-
- After a few moments, you'll receive a connection message from the
- computers at Cornell University, asking for a login. This screen
- will be rather messy; don't worry about that, it'll come out right.
- And don't dilly-dally here, either, because the Cornell computers
- aren't the LEAST bit patient -- if you take more than a few seconds
- to say something, you'll be very rudely dumped. Enter "www" in
- lowercase at the Login: prompt (don't use the quotes!) and press
- RETURN.
-
- You'll get an introductory screen; press RETURN and your first
- (default) hypertext document screen will be presented to you!
-
- The important thing about this screen is NOT its contents (which are
- of almost NO interest to us Commodore users) but its *layout*. But
- before I discuss that, let us digress long enough to customize the
- server itself. Press the "o" key (*DON'T* press RETURN).
-
- Most of the screen should clear, leaving a menu-like list of system
- variables and options to change. Here is where the nuances of VT-100
- come into play: your cursor will appear to the right of the choice
- you are changing, WITHOUT the whole screen being re-written -- the
- remote program is using cursor controls! However, YOU select the
- option itself by first letter.
-
- First type "p" (for "Personal Mail Address") to enter your E-Mail
- address. This will make it VERY easy to mail yourself some of the
- documents you'll find on the Web. (More on this rather later on.)
- Don't be alarmed if the address you type is mysteriously preceded
- by a couple of strange letters or numbers -- these are VT-100 codes,
- and do no harm. Just type the address.
-
- Next type "k" ("Keypad") several times until "Links are numbered"
- appears at the right side of the screen, and press RETURN to select
- this. If you don't, all those "footnote-like" thingies I've been
- discussing won't appear!
-
- Lastly, type "c" to change the "Character Set". Press "C" several
- times to cycle through the various options, until "7-bit
- approximations" appears. This will help to keep the screenfuls of
- text that you get nice and readable. Press RETURN to select this. We
- are now ready to Browse the Web! Press "r" now to return to the
- starting screen.
-
- Take a moment now to notice the few "footnotes" (bracketed numbers)
- on the screen. (The server was a trifle balky at this; they might
- not be visible! Nonetheless, they are there. Try entering numbers.)
-
- These, as previously discussed, are hypertext links, and lead to
- other documents. Try typing one of these numbers in, and pressing
- your RETURN key. You'll see the "---press spacebar to continue---"
- at the bottom of the screen disappear and be replaced by "Read
- link: #" (where # is the number you are in the process of typing
- in). Change your mind? Delete the number you're typing and press
- RETURN without ANY number being entered. "Aborted!", the server will
- scream, and the "---press spacebar to continue---" will
- reappear.
-
- If you DO enter a number, you'll see some information "flash by" at
- the bottom of the screen, the text on the screen will be "re-drawn",
- and you'll be faced with a different document. This is the general
- pattern. Press space to continue reading; type a "cursor-up" to go
- back (the server is a bit flaky in this regard, however, you might
- have to press cursor-up several times in quick succession before it
- listens to you), and a cursor-left to return to the original main
- screen. Of course, there may be other "links" (footnotes) in THIS
- document that interest you -- type them in! You can always return to
- the FIRST, main, screen, by typing "m" and answering "yes" to the
- question.
-
- For now, just move around a bit long enough to become comfortable
- with this strange new method of navigation. When finished, return to
- the main screen by typing "m" and "y"...
-
- And you should now be staring at the starting screen again! As I
- said before, the important thing about this screen is not so much
- what it SAYS, as the way it's laid out, because a similar layout
- will be presented throughout your session.
-
- The top couple of lines are not clear on my screen, because my
- implementation of VT-100 is imperfect. It's *supposed* to be in
- reverse video, for example, but it isn't, at least not on my screen.
- These lines are meant to display information about the current
- hypertext document you are reading, including its link name (that
- is, its "http://" address). Frankly, I'm not interested, since you
- don't really NEED this information anyway.
-
- The rest of the screen, down to about the last three or four lines,
- is text. This might not be perfectly displayed, either, and might
- have remnants of earlier screens visible on it. Again, if this is
- the case, it is due to imperfections in your terminal program's
- implementation of VT-100. Generally, however, it should be easily
- readable.
-
- The botom few lines are IMPORTANT. The topmost of these lines will
- *usually* read "---press spacebar to continue---"; below this
- will be a list of valid options. You'll notice that "O)ptions" is
- one of them; we just used this a moment ago to tweak the server to
- our needs. "H)elp" is available too, although it is rather confusing
- and technical, and not particularly helpful. By far and away the
- most *useful* option listed, however, is "G)o URL" Press "g"
- (*don't* press RETURN). Immediately, the "press spacebar" prompt
- will *vanish* and be replaced by a prompt asking you to supply the
- "URL to open", with your cursor to the immediate right of this
- prompt.
-
- Of course you need a hyptertext address, don't you? Hmmm! Well, you
- might try entering this (type carefully!):
-
- http://www.msen.com/~brain/
-
- (On a Commodore-128, the "~" character is created by typing a
- shifted "^".) Now press RETURN.
-
- The prompt vanishes and, in very quick succession, you'll see the
- line replaced by other, single, lines explaining what's happening,
- including a count of bytes the document contains and and how many
- are actually being retrieved. Within a couple of moments, the screen
- will be "re-drawn", and the document itself -- the "Homepage" of
- someone called "Jim Brain" -- will appear... then the information
- line will be replaced by that "---press spacebar to continue---"
- prompt again!
-
- You should have the basic idea by this time; you can proceed here
- just as you did at the Main Screen, paging through the text with
- your spacebar, and entering link numbers to "digress" to additional
- information of interest to you. Remember that a cursor-left will
- take you back to the previously read document, and that cursor-up
- and cursor-down will allow you to move within the CURRENT document.
- If your go back to re-read a "previous" document, a cursor-right
- will move you back to the "next" one (!). Of course, the Commodore-
- 128 has those four cursor keys at the top of the keyboard, which
- makes this very easy.
-
- In all your explorations, just remember four things:
- 1. You can't get lost! If you think you're lost, just press "m"
- and answer "yes" to return to the original main screen, where you
- can always start over.
- 2. The "abort code" is Control-G. Why they chose this is a
- matter of pure conjecture, but there it is. If you try to access a
- link and the system seems to "freeze", it may be due to
- unavailability of that link, or for some other reason, but you grow
- impatient waiting you can always abort with Control-G.
- 3. Don't forget the meter running in the background: this comes
- out of your free Internet time, if you have any left, and if you
- don't it is charged to you by the hour.
- 4. Don't get TOO hung up with the meter -- have Fun!
-
-
- RETREIVING A DOCUMENT FOR FUTURE REVIEW:
-
- O.K., you've found this k00l document, full of things you always
- wanted to know but were afraid to ask... but, uh, how do you save it
- to disk?
-
- Your first impulse will surely be to save it to your text buffer as
- it is drawn on your screen. Do yourself a favor: DON'T. You're still
- in VT-100 emulation, remember? VT-100 inserts all sorts of control
- characters and strange codes, and doesn't use proper line lengths,
- etc. In short, what you will get in your buffer will be a flat-out
- MESS. Oh, the text will BE there, all right, and you CAN edit it
- into shape if you're patient enough; it's just that very few people
- have that much patience! What to do?
-
- You have two options, and both involve the "p" (print) command
- (listed at the bottom of the screen). If the document is *short*,
- you CAN use the "save to buffer" method -- in combination with the
- "p" command. To do this, type "p", and a print menu should appear.
-
- Ignore option 1 (save to local file) because it apparently requires
- an account with Cornell and isn't available via Telnet. We're
- interested in options 2 and 3.
-
- What you want is option 3. Type "3", and you'll be prompted to press
- RETURN. NOW open your text buffer, and press RETURN. The text will
- be sent to you continuously, with only minimal VT-100 translation,
- (or if you're very lucky, with none at all).
-
- But this is a little cumbersome for very sizable documents, and
- that's where option 2 comes in. Type "p" and then "2", and you'll be
- prompted for your E-Mail address -- which, if you've followed my
- instructions, will appear automatically as the default! (You entered
- this from the "Options" screen, remember?) Just press RETURN (or
- enter your address first, if you didn't earlier), and the document
- will be translated to simple ASCII and E-Mailed right to you! What
- could be easier?
-
-
- CONGRATULATIONS!
-
- The first time I actually managed to access the Web, I spent FIVE
- AND A HALF HOURS browsing it and never noticed the time. When I went
- to bed, it was nine o'clock -- in the MORNING!!! (*Boy*, I'm glad
- I'm on the Internet Club!) Of course, I can't be doing that ALL the
- time, but isn't it good to know that one can do it at all???
-
- I think you'll find the World Wide Web to be JUST as interesting as
- I did. Congratulations on entering the Internet Bigtime -- and happy
- browsing!!!
-
- -=-=-=-=-=-=-=-=-=-=-=-=-
-
- SYSTEM INFORMATION: My system consists of a flat C-128, 1571, 1581,
- Aprotek Minimodem C24 (2400 baud), and BobsTerm Pro.C128 terminal
- program. The VT-100 emulation I use is *NOT* the standard VT-100
- offered by BobsTerm, but a custom version contained in a macro
- supplied by a user of one of the Commodore Forums on CompuServe. I'm
- sorry I don't remember his name; if I did, I'd credit him.
-
- -=-=-=-=-=-=-=-=-=-=-=-=-
-
- This text is Copyrighted (C) 1995 by Glenn P. No big deal about
- that; feel free to copy and distribute this text -- but you DON'T
- have my permission to SELL it, O.K.? Thanx!
-
- Comments or questions regarding this textfile are welcome. Send your
- queries or remarks to Glenn P.>INTERNET: 74127.01457@CompuServe.COM.
-
- --Glenn P.
-
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