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	EDCOM42.COM is a full-screen binary file editor (it displays
	80 columns, 24 rows).  It enables you to view and edit ANY
	file (if it fits in available memory) on an IBM-compatible
	computer.  You could, for example, view and edit EDCOM42.COM.

	EDCOM42 is a revision (December 1989) of EDCOM, written in July
	1987 in 8088 assembly language, using the shareware assembler A86.
	The user-interface has been improved, and a disassembler has been
	added (shows the assembly language interpretation of each character).

	WARNING: EDCOM42 over-writes a file if you make changes to it and
	save it, so MAKE A BACKUP COPY FIRST.

	Type "EDCOM42 FILENAME" to view/edit FILENAME.

	Press the Esc key to exit.

	Press the F1 key for a help screen.
	(The ^ before a letter means press the Ctrl key and the letter at
	the same time.)

	Cursor location (in hexadecimal) and the hexadecimal contents at
	that location are shown at the top of the screen.  .COM files
	always begin at 100 (hexadecimal).  .EXE files begin at 0, but
	the code usually starts somewhere else, so when EDCOM42 loads an
	.EXE file, it jumps to the beginning of the code instead of the
	beginning of the file.

	Press any other Function key to toggle between 3 edit modes:
	   1. Disable edit capability (default)
	   2. Enable edit capability of typeable characters only
	   3. Enable edit capability of any character (in hexadecimal)

	Press either the Insert or Delete key to show or not show the
	assembly language translation of the current character (and
	following characters, if applicable).  When the translation is
	shown, all characters are displayed, otherwise only typeable
	characters are displayed, and the others are represented by dots.
	The characters involved in the assembly language instruction are
	highlighted.

	You can search for either typeable characters or hexadecimal numbers
	(hexadecimal numbers go 0 1 2 3 4 5 6 7 8 9 A B C D E F).

	To find hexadecimal numbers, enter the numbers either right next
	to each other, or with a space or comma between them.  If you put
	a space or comma between the numbers, you can enter a single
	digit, otherwise you must enter a double digit (e.g. enter either
	7,0A,3 or or 7 0A 3 or 070A03).

	To find typeable characters, enter a quotation mark first (either
	" or ').  No quotation mark is necessary at the end.  To find a
	string of typeable characters with an embedded quotation mark (or
	apostrophe), enter the other kind of quotation mark first before
	entering the string (e.g. "can't or '"Hi, Frank). Note that the
	character needs to be the proper case (upper or lower).

	A couple of other things the help screen doesn't mention:
	Scroll Lock works in this program.
	When the assembly language translation is showing on the
	screen, pressing almost any key will move the cursor to the
	next instruction instead of just the next character.

	To change the color of different parts of the program, use EDCOM42
	on EDCOM42.COM to change the following:

	   COLOR	  LOCATION   CONTENTS
	MAIN SCREEN	    0018B	17
	TOP LINE	    0018C	74
	ASSEMBLY LANG.	    0018D	78
	INSTRUCTION	    0018E	1F
	"EDITING CHARS"     0018F       67
	"EDITING HEX"       00190       47

	NOTE: the numbers are in hexadecimal.  Use my program ATTRIB3.COM
	to choose from the 256 possible colors.

	Doug Cox
	140 Monroe Dr
	Palo Alto, Ca 94306
	(415) 949-0624