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HYPERTXT.HTX
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1989-07-28
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hypertxt.htx
Copyright 1989, John W. Small, All rights reserved
PSW / Power SoftWare, P.O. Box 10072
McLean, Virginia 22102 8072
(703) 759-3838
7/27/89
help
Copyright 1989, John W. Small, All rights reserved
A hypertext file is a text file partitioned into topics.topics
Topics can have more than one page.pages
A page may have highlighted text areas which are called
hyperlinkshlinks. Hyperlinks are references to other topics.
Use the cursor movement keys to move between hyperlinks.
Press <Enter> to select the topic associated with a hyperlink.
Press <Backspace> to return to the previous topic.
Press <ESC> to return directly to the root topic.
Press <ESC> again to exit program.
See also: keystoke summarykeys
The message linemessline appearing at the bottom of the screen
displays the name of the current topic and hypertext file
at the left as well as the topic referenced by the current
hyperlink, if any, towards the right.
topics
A topic is any group of text that constitutes an idea.
A hyperlinkhlinks embedded in the text of a topic links that
topic to another topic. With many hyperlinks a single
topic could be feasibly linked to many topics.
A topic may comprise several pages.pages
The name of the current topic is displayed at the start
of the message linemessline followed immediately by a "|" and
the name of the hypertext file.
See also: hypertext file formathtformat
It is possible to move sequentially through the topics
of a hypertext file even though they may not be "hyperlinked."
Use <Ctrl Page Up> and <Ctrl Page Down> to move between
adjacent topics and <Ctrl Home> and <Ctrl End> to move to
the first and last topics of a hypertext file respectively.
Use <Alt F3> to specify a topic by name. Topic names are case
sensitive, which means upper and lower case letters must match
exactly in order to find the topic.
Use <F3> to specify another hypertext file.
See also: keystoke summarykeys
pages
If a hypertext topic has more than one page the "PgUp/PgDn"
message will appear on the message line at the bottom of
the screen.
Use the <Page Down> key now to move to the second page
of this topic which is "pages."
<Backspace> will return you to the previous topic.
See also: keystoke summarykeys
Congratulations, you have arrived - that is at the second
page of the topic "pages."
<Page Up> will take you back to the first page of the
topic "pages."
Note that <Backspace> will return you to the previous topic
and not back to the first page of this topic!
hlinks
Hyperlinks are keyword phrases embedded in the text of a
topic.topics This allows a topic to reference other topics
which expound on the keyword idea. In a way, this is
like embedding the index of a book right into the text.
A hyperlink can link to a topic in another hypertext file.
This allows hypertext files to be interrelated.
A hyperlink may even link to an executable file or system
command!
The message linemessline reveals the associated "hyperlinked"
topic and/or file.
See also: hypertext file formathtformat
messline
The message line appearing at the bottom of the screen
displays the current hypertext topic followed by a "|"
and a hypertext file name which in the case of this topic
is "messline|hypertxt.htx." If this program were started
with a path name that path name will appear prefixed to
"hypertxt.htx."
The current hyperlinkhlinks, if any, is shown to the right.
If the hyperlink links to a topictopics in the current
hypertext file, only the topic is shown. Otherwise the
topic is followed by a "|" and the name of the auxilary
hypertext file.
If the link is to an executable file, the topic portion
will be missing with only the "|" and the name of the
executable file appearing.
See also: hypertext file formathtformat
keys
<Enter> select topic associated with current hyperlink
<BackSpace> return to previous topic
<ESC> return to root topic or exit
Cursor keys &
Home/End move between hyperlinks
<Page Up>/
<Page Down> move between pages of a topic
<Ctrl PgUp>/
<Ctrl PgDn>/
<Ctrl Home>/
<Ctrl End> move between topics
<F1> hypertext help
<F3> load new hypertext file
<Alt F3> specify new topic
htformat
When viewing a hypertext file with a word processor the
topic and hyperlink formating characters become visible.
A topictopics is defined on a line by itself begining in column
one with a vertical tab character, <Ctrl K>, i.e.
^Ktopic
The topic continues on until the next topic or a <Ctrl X>
in column one or the end of the file is reached.
A topic can comprise multiple pagespages by having a line
containing only a vertical tab in column one to indicate
the page break, i.e.
^K
It's up to the hypertext file to provide formating for
pages and lines.
A hyperlinkhlinks appears as follows:
^E text ^Ktopic^X
<Ctrl E> introduces a hyperlink and <Ctrl X> ends it.
The <Ctrl K> separates the visible text from the name
of the "hyperlinked" topic.
If the topic resides in an auxilary hypertext file a "|"
followed by a file name is appended to topic, i.e.
^E text ^Ktopic|filename^X
If the topic is missing than the file is executed as
a program:
^E text ^K|filename^X
From what you have learned from this topic you should be
able to use your word processor to create hypertext files
that can be read by this program.
Start out by examining this help file with your word
processor, i.e.
View: hypertxt.htx|view hypertxt.htx