.\"	Print this document using "seqn file | sroff -ms".
.rs
.sp 2
.ft B
.ce
Seqn: Differences from Eqn
.ft P
.sp 2
.PP
\fISeqn\fP is a modification of eqn that uses the Greek and Scientific
fonts of the Sanders printer to generate as many of the normal equation
symbols as possible.
\fISeqn\fP is essentially similar to \fIeqn\fP
except for the symbols available.
One quirk about \fIseqn\fP (and \fIeqn\fR) is that all unrecognized words
are set in the italic font.
This is normal, unless you are using a set of fonts
with no italic font and font I is therefore underlined.
If this is the case, you can override the font default with:
.in 0.5i
.nf
.ft B
\&.EQ
gfont R
\&.EN
.in
.fi
.ft R
in the file, which sets the global font to \fBR\fP,
or the command-line option \fB-fR\fP to \fIseqn\fP.
One other difference from \fIeqn\fP is that the default
.EQ
delim off
.EN
delimiters for in-line equations are dollar signs
(as if \fBdelim $$\fP had been used).
This can be turned off using \fBdelim off\fP between .EQ
and .EN.
The following are the special symbols that can be
printed using \fIseqn\fP and their names.
.EQ
delim $$
.EN
.sp
.nf
.ta .25iC .5i 3.25iC 3.5i
	$ alpha $	alpha	$ beta $	beta
	$ gamma $	gamma	$ delta $	delta
	$ epsilon $	epsilon	$ zeta $	zeta
	$ eta $	eta	$ theta $	theta
	$ iota $	iota	$ kappa $	kappa
	$ lambda $	lambda	$ mu $	mu
	$ nu $	nu	$ xi $	xi
	$ omicron $	omicron	$ pi $	pi
	$ rho $	rho	$ sigma $	sigma
	$ tau $	tau	$ upsilon $	upsilon
	$ phi $	phi	$ chi $	chi
	$ psi $	psi	$ omega $	omega
	$ ALPHA $	ALPHA	$ BETA $	BETA
	$ GAMMA $	GAMMA	$ DELTA $	DELTA
	$ EPSILON $	EPSILON	$ ZETA $	ZETA
	$ ETA $	ETA	$ THETA $	THETA
	$ IOTA $	IOTA	$ KAPPA $	KAPPA
	$ LAMBDA $	LAMBDA	$ MU $	MU
	$ NU $	NU	$ XI $	XI
	$ OMICRON $	OMICRON	$ PI $	PI
	$ RHO $	RHO	$ SIGMA $	SIGMA
	$ TAU $	TAU	$ UPSILON $	UPSILON
	$ PHI $	PHI	$ CHI $	CHI
	$ PSI $	PSI	$ OMEGA $	OMEGA
	$ > $	>	$ < $	<
	$ >= $	>=	$ <= $	<=
	$ == $	==	$ != $	!=
	$ +- $	+-	$ -+ $	-+
	$ -> $	->	$ <- $	<-
	$ << $	<<	$ >> $	>>
	$ >< $	><	$ <> $	<>
	$ =\~ $	=~	$ !< $	!<
	$ !> $	!>	$ inf $	inf
	$ infinity $	infinity	$ <=> $	<=>	
	$ half $	half	$ prime $	prime
	$ approx $	approx	$ propor $	propor
	$ nothing $	nothing	$ cdot $	cdot
	$ times $	times	$ divide $	divide
	$ partial $	partial	$ del $	del
	$ grad $	grad	$ laplace $	laplace
	$ box $	box	$ ... $	...
	$ sum $	sum	$ prod $	prod
.sp .5
	$ bint $	bint	$ int $	int
.sp .5
	$ union $	union	$ inter $	inter
	$ subset $	subset	$ supset $	supset
	$ member $	member	$ empty $	empty
	$ ang $	ang	$ lang $	lang
	$ rang $	rang	$ perp $	perp
	$ scriptl $	scriptl	$ norm $	norm
	$ uarrow $	uarrow	$ larrow $	larrow
	$ rarrow $	rarrow	$ darrow $	darrow
	$ dagger $	dagger	$ sub0 $	sub0
	$ sub1 $	sub1	$ sub2 $	sub2
	$ sub3 $	sub3	$ sub4 $	sub4
	$ sub5 $	sub5	$ sub6 $	sub6
	$ sub7 $	sub7	$ sub8 $	sub8
	$ sub9 $	sub9	$ sup0 $	sup0
	$ sup1 $	sup1	$ sup2 $	sup2
	$ sup3 $	sup3	$ sup4 $	sup4
	$ sup5 $	sup5	$ sup6 $	sup6
	$ sup7 $	sup7	$ sup8 $	sup8
	$ sup9 $	sup9	$ ciplus $	ciplus
	$ citimes $	citimes	$ cidot $	cidot
	$ =wig $	=wig	$ -wig $	-wig
	$ =dot $	=dot	$ -dot $	-dot
	$ =hat $	=hat	$ 3dot $	3dot
	$ abs $	abs	$ nie $	nie
	$ angst $	angst	$ star $	star
	$ hbar $	hbar	$ <-> $	<->
	$ thf $	thf	$ quarter $	quarter
	$ 3quarter $	3quarter	$ degree $	degree
	$ vbar $	vbar	$ curse $	curse	
	$ lfl $	lfl	$ rcl $	rcl
	$ rfl $	rfl	$ lcl $	lcl
	$ lbs $	lbs	$ circle $	circle	
	$ oppA $	oppA	$ andsign $	andsign
	$ orsign $	orsign	$ oppE $	oppE
	$ nexist $	nexist	$ exist $	exist
.sp .5
The following words are recognized and are set in font 1.
.ta .5i 2i 3.5i 4.5i 
	Im	Re	and	arc
	cos	cosh	coth	det
	exp	for	if	lim
	ln	log	max	min
	sin	sinh	tan	tanh