Command			Function
------------------------   -------------------------------------------------
hi/fil 30 test.hbk       -> open a hbook file named test.hbk
hi/fil 30 new.hbk ! n    -> open a new hbook file.
------------------------   -------------------------------------------------
ve/cr x(10)		 -> create a vector named x
ve/cr x(10) r 1 2 ...    -> create a vector x with input ...
ve/in x			 -> Input vector x
ve/del			 -> delete vector
ve dr x num c/s/+/b/l/p/*
ve/list			 -> list all vectors
ve/read v 'file'         -> read data from file
ve/fit x y ! p[n] ws     -> fit y by polynomial of order N
do i=3,6 ....enddo       -> for i=3 to 6
------------------------   -------------------------------------------------
zone 2 3		 -> Set layout to 2 list, one list have 3 graph
zone  			 -> Reset picture layout
clr			 -> clean screen
set htyp                 -> set hatch style for histogram

------------------------   -------------------------------------------------
nt/pl 1.cosb ! ! ! ! s   -> draw another picture in the same 

1d 300 'title' 20 -0.2 0.2   open a space to project
               bin  range

nt/proj 300 1.de         -> project to 300
------------------------   -------------------------------------------------
fort/fil 2 plotlrs.ps    -> create a ps file
meta 2 -111              ->  -111 --> ps
opt stat                 -> display the statics