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1991-04-02
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GIL (c)
GRAPHICS INTERCHANGE LANGUAGE
Version 1.01
A Public Domain Program
Copyright (c) 1991 by Glenn L. Williams
Protected by Federal Copyright Law.
Permission granted for non-commercial use and distribution.
Not to be used for commercial advantage. All rights reserved.
This document contains five (5) pages.
Disclaimer
----------
The author shall have no liability or responsibility to user or any other
person or entity with respect to any loss or damage caused or alleged to be
caused directly or indirectly through the use of this documentation or the GIL
program.
Distribution and Use of GIL
---------------------------
GIL is a copyrighted program. All rights are retained by the author.
GIL is not to be sold; nor is it to be used for commercial purposes. You
may freely distribute GIL, and you are encouraged to do so, but you may
not charge for doing so. The following files should be included in any
distribution:
GIL.EXE
GIL.DOC
GILMAIN.DOC
PENG.GIL
QSL.GIL
1. Purpose
----------
The primary purpose behind GIL is to permit a convenient way for radio
amateurs to send more than just ASCII text messages over the packet or RTTY
radio links. Up until GIL was written, amateurs had no way to transmit
reasonably small "files" containing enough information to reconstruct a good
line drawing or cartoon, over the radio.
2. Starting GIL
--------------------
If you have not already done so, please make a working copy of all GIL
disk files and store away the disk on which you received GIL for safekeeping,
and use the working copy when you want to run GIL. You may write protect
the working copy because GIL will not usually write to the disk. (This applies
to version 1.0 only. In the future releases the usage of the disk may change.)
Your working disk should contain the following files:
GIL.EXE (The GIL executable program)
and several other .GIL format files for your enjoyment.
2.1 Interactive startup
------------------------
To run GIL in interactive mode, the following command syntax is used:
Start from your DOS prompt with the command:
GIL
and when you receive the "GIL>" prompt, then type in your ASCII commands. As
each command is typed it will be listed on the screen, and then executed when
you type the ENTER key. Just above the command line your most recent command
is listed, and just below the command line (in some cases) are error messages.
When you are done and wish to go back to DOS, use the ".bye" command to exit.
2.2 Non-interactive startup
----------------------------
For straight ASCII file input, GIL accepts input from "stdin" redirection,
as follows:
GIL <[drive:][path][filename]
^
|......note this "<" character used for stdin input redirection.
At the end of the drawing process, when you are done viewing the drawing,
striking any key will clear the screen and return you to DOS.
If you have a TSR utility such as GRAPHICS.COM (usually supplied with your
DOS for CGA adapters), or EGAPRTSC.COM (for EGA adapters) you can also print
the screen to an IBM or EPSON dot matrix printer, for obtaining a hard copy.
That is, any TSR screen capture utility or printer utility capable of can
"grab" the screen and "live" as a TSR (Terminate and Stay Resident) utility in
your computer, can print the screen. However, at this time, the author has not
had the time and resources to test all the TSRs's out there for compatibility
with GIL. Nor is it expected at this time for GIL to cooperate with Microsoft
Windows (TM) in any way other than as a "DOS" program. But since GIL interacts
with your video card, it may or may not have a deleterious effect when
operated under programs that use screen graphics as part of a "windows" or
"shell" environment.
WARNING: GIL will interact with your screen graphics adapter. As a result
it may "trash" anything else on the screen. GIL has not been tested with
all the graphics adapters in the world, and especially not with the monochrome
versions of CGA, EGA, and VGA. The graphics routines are supported via the
Microsoft Corporation "C" library for Quick-C 2.5 (TM) and any artifacts
created by the standard library are not the fault of this author.
3.0 Neutral format "GIL" files
-------------------------------
Since they are ASCII files, the .GIL type neutral files can be exchanged,
sent to PBBS systems, E-Mailed, etc. to other users. Once the user has a copy
of GIL.EXE, he/she can view the "drawings" and obtain hardcopies as described
below.
It is the author's original intended purpose for amateur radio operators to
freely exchange copies of GIL.EXE and any associated .GIL type neutral files.
GIL.EXE should be exchanged via telephone modem or floppy disk ("Nike Net")
exchange.
The ASCII .GIL type neutral files are intended for exchange via packet radio
worldwide. These files carry the information for making a drawing, but being
ASCII, they contain no information of an encrypted nature which would violate
national or international regulations about exchanging encrypted information
via amateur radio. Since these files are (usually) short, they will not "hog"
precious radio bandwidth.
This utility is being provided free of charge for the main benefit of
amateur radio operators worldwide. In the U.S.A. amateur radio is a hobby
that is infinitely enjoyable for young and old. We "hams" cannot receive
a profit from anything we do in amateur radio, therefore, this program is
freely available and the author expects no profit from it. For this reason,
this program and the .GIL file technique are NEVER to be used as a source
of income by any individual or corporation. The copyrights are not
transferable. However, this software may be sold on floppy disk by vendors
of freeware and shareware where the floppy disks are sold for no more than
$5.00 each via mail order or at fleamarkets and hamfests.