a=expand   b=zero base   ,=left   .=right   w=window   z=zoom
c=redraw full scale   o=overplot   r=redraw current scale
d=deblend   e=eq. width   f=functions   h=1 sided eqw   i=write sp   j=fix pix
k=gauss fit   l=flambda   m=mean/snr   n=fnu   p=>wavelth   q=quit   s=smooth
t=curfit   u=set wave   v=velocity scale   x=fix line   y=plot std
/=status help   ?=help   -=subtr fit   $=wavelength/pixel
g=new spectrum   #=aperture   %=band   (=previous   )=next