Teff	T_{\rm eff}
FeH	{\rm Fe}/{\rm H}
aFe	\alpha/{\rm Fe}
angstrom	\text{Å}
cm	{\rm cm}
um	{\rm \mu m}
km	{\rm km}
gram	{\rm g}
erg	{\rm erg}
dyne	{\rm dyn}
second	{\rm s}
yr	{\rm yr}
kelvin	{\rm K}
radian	{\rm rad}
sterad	{\rm sr}
barye	{\rm Ba}
Msun	{\rm M}_{\odot}
diff	{\rm d}#1
sderiv	\diff{#1}/\diff{#2}
obs	{\rm o}
vshat	{\bf \hat{s}}
vdhat	{\bf \hat{d}}
vnhat	{\bf \hat{n}}
vx	{\bf x}
engy	E
engyo	E^{\obs}
intsy	I_{\lambda}
mintsy	\overline{I}
flux	F_{\lambda}
fluxo	\flux^{\obs}
mflux	\overline{F}
mfluxo	\overline{F}^{\obs}
fluxz	F_{0}
area	A
areao	A^{\obs}
grad	g_{\rm rad}
