.. July 4, 1983 convenient equation numbering macro:
..
.sc #
..
.rg e# 1
..
.dm EN
(\\e#\\)
.bj
.rg e# +1
.em
..
.. June 27, 1983 italics for roff4:
.pc I hex ;italics on (MX-80 & Graftrax)
1B 34
.en
.pc i hex ; italics off (MX-80 & Graftrax)
1B 35
.en
..
.rg i# 1	;illustration number
.........................
.di figs		.
.ce 1			.
^U^BFIGURE CAPTIONS^u^b
.sp 1			.
.ed			.
.........................
.................................
.dm IS	;illustration caption	.
.di figs			.
^BFig. \i#\ ^b
.em				.
.................................
.................................
.dm IE	;illustration end cap.	.
.br				.
.sp 1				.
.ed				.
.rg i# +1			.
.em				.
.................................
.rg f# 1
.ds "fn"^+\\f#\\^-"
........................
.di fnotes             .
.sp 2                  .
.ce 1                  .
^U^BFOOTNOTES^b^u
.sp 1                  .
.ed                    .
........................
........................
.dm FS ;footnote start .
.di fnotes             .
\\fn\\\\
.em                    .
........................
.........................
.dm FE ;footnote end	.
.br			.
.sp 1			.
.ed			.
.rg f# +1		.
.em			.
.........................
.. December 4, 1982; Scientific Symbol definition table
.. FOR MX-80 PRINTER WITH GRAFTRAX INSTALLED
.WH HEX 1B 32 . ; 6 lines/inch is standard
.fr 2 hex 1b 33 12 . ; 18/216" = halfline spacing
..
.TR * binary ;DOT PRODUCT on MX-80
00011011 ;ESC
01001011 ;4B
00000110 ;6 bit patterns
0	 ;follow:
00000000 ;left top,bot
00000000
00011000
00011000
00000000
00000000 ;right top,bot
.en
.TR . binary ;looks like a character to formatter
		;but is a NOP as far as printer is concerned
		;on MX-80
.en
.TR 6 binary ;curly derivative on MX-80
00011011 ;ESC
01001011 ;4B
00000110 ;6 bit patterns
0	 ;follow:
00000110 ;left top,bot
00101001
01001001
01001010
00111100
00000000 ;right top,bot
.en
.TR 8 binary ; infinity on MX-80
00011011 ;ESC
01001011 ;4B
00001100 ;12 bit patterns
0	 ;follow:
00000000 ;left top,bot
00011100
00100010
00100010
00100010
00011100
00100010
00100010
00100010
00011100
00000000
00000000 ;right top,bot
.en
.TR = binary ;"identity"operator (triple equal sign) on MX-80
00011011 ;ESC
01001011 ;4B
00000110 ;6 bit patterns
0	 ;follow:
00101010 ;left top,bot
00101010
00101010
00101010
00101010
00000000 ;right top,bot
.en
.TR @ binary ;"DEL"operator (upside-down delta) on MX-80
00011011 ;ESC
01001011 ;4B
00000110 ;6 bit patterns
0	 ;follow:
01100000 ;left top,bot
01011000
01000110
01011000
01100000
00000000 ;right top,bot
.en
.TR D binary ;capitol delta on MX-80
00011011 ;ESC
01001011 ;4B
00000110 ;6 bit patterns
0	 ;follow:
00000110 ;left top,bot
00011010
01100010
00011010
00000110
00000000 ;right top,bot
.en
.TR I binary ;integral sign on MX-80
00011011 ;ESC
01001011 ;4B
00000110 ;6 bit patterns
0	 ;follow:
00000001 ;left top,bot
00000001
00111110
01000000
01000000
00000000 ;right top,bot
.en
.TR S binary ;gamma ON MX-80
00011011 ;ESC
01001011 ;4B
00000110 ;6 BIT patterns
0	 ;follow:
01100011 ;left top,bot
01010101
01001001
01000001
01000001
00000000 ;right top,bot
.en
.TR a binary ; alpha,lowercase
00011011 ;ESC
01001011 ;4B
00000110 ;6 BITS
0	 ;FOLLOW:
00011100 ;LEFT TOP,BOT
00100010
00100010
00011100
00100010
00000000 ;RIGHT TOP,BOT
.en
.TR b BINARY ;BETA ON MX-80
00011011 ;ESC
01001011 ;4B
00000110 ;6 BITS
0	 ;FOLLOW:
00001111 ;left top,bot
00110010
01010010
01011100
00100000
00000000 ;right top,bot
.en
.TR d binary ;delta ON MX-80
00011011 ;ESC
01001011 ;4B
00000110 ;6 bit patterns
0	 ;follow:
00010110 ;left top,bot
00101001
01001001
01001001
00100110
00000000 ;right top,bot
.en
.TR e binary ;epsilon ON MX-80
00011011 ;ESC
01001011 ;4B
00000110 ;6 bit patterns
0	 ;follow:
00011100 ;left top,bot
00101010
00101001
00101001
00100000
00000000 ;right top,bot
.en
.TR f binary ;phi ON MX-80
00011011 ;ESC
01001011 ;4B
00000110 ;6 bit patterns
0	 ;follow:
00001000 ;left top,bot
00010100
00011111
01110100
00010100
00001000 ;right top,bot
.en
.TR g BINARY ;gamma ON MX-80
00011011 ;ESC
01001011 ;4B
00000110 ;6 BIT patterns
0	 ;follow:
00010001 ;left top,bot
00010010
00001100
00001000
00010000
00000000 ;right top,bot
.en
.TR h binary ;theta ON MX-80
00011011 ;ESC
01001011 ;4B
00000110 ;6 bit patterns
0	 ;follow:
00000110 ;left top,bot
00011001
00101001
00101010
00111100
00000000 ;right top,bot
.en
.TR l binary ;lambda on MX-80
00011011 ;ESC
01001011 ;4B
00000110 ;6 bit patterns
0	 ;follow:
01000110 ;left top,bot
00101000
00010000
00001000
00000110
00000000 ;right top,bot
.en
.TR p binary ;pi on MX-80
00011011 ;ESC
01001011 ;4B
00000110 ;6 bit patterns
0	 ;follow:
00100000 ;left top,bot
00111111
00100000
00111110
00100001
00000000 ;right top,bot
.en
.TR s binary ;sigma on MX-80
00011011 ;ESC
01001011 ;4B
00000110 ;6 bit patterns
0	 ;follow:
00001110 ;left top,bot
00010001
00010001
00011001
00010110
00010000 ;right top,bot
.en
.TR u binary ;mu on MX-80
00011011 ;ESC
01001011 ;4B
00000110 ;6 bit patterns
0	 ;follow:
00111111 ;left top,bot
00001000
00000100
00000100
00111100
00000000 ;right top,bot
.en
.TR v binary ;nu on MX-80
00011011 ;ESC
01001011 ;4B
00000110 ;6 bit patterns
0	 ;follow:
00111110 ;left top,bot
00000010
00000100
00001000
00110000
00000000 ;right top,bot
.en
.TR w binary ;omega on MX-80
00011011 ;ESC
01001011 ;4B
00000110 ;6 bit patterns
0	 ;follow:
00011110 ;left top,bot
00000001
00011111
00000001
00011110
00000000 ;right top,bot
.en