Level 2 Help for POWER

 string - input data set (only 1 input allowed)

The size parameter determines the boundaries in the input
file from which POWER is to operate.  It is specified
as  (SL,SS,NL,NS), where
	SL is the starting line 
	SS is the starting sample
	NL is the number of lines to be copied
	NS is the number of samples (pixels) in each line

 EXPONENT=E where E is an integer between or equal to 3 and 10, specifying
 the exponent of 2 for the desired 1 - dimensional transform size. If half
 word data, E referes to the transform size in samples and not bytes.
 The default is the biggest power of 2 that is less than the number of input
 samples.

 REAL - DEFAULT=2.0
 SCALE = S where S is a real specifying the output plot amplitude scale.

 REAL - DEFAULT=1.0
 Specifies that the input DNs have been scaled up from the original values,
 and that the scale is to be removed to yield plots scaled to the original
 DNs.  An example would be scaling done during filtering.

 FMAX = F where F is a floating point number specifying the highest frequency
 in the spectrum (the nyquist or aliasing frequency). It is numerically equal
 to 1/2 of the reciprocal of the pixel-to-pixel spacing measured in whatever
 units are used. The length of the frequency axis on the line printer is
 2**(E-1) lines. It is printed 6 data points per inch, and the annotation 
 on the frequency axis is given by F/2**(E -1) DN every line, where F and E 
 are given by the FMAX and EXPONENT keywords, respectively. Default is F=0.5,
 corresponding to a pixel spacing of unity.  

 FMAX applies only to the plots, the output tables ignore it.

 specifies the length in inches of the Y axis.(default=7.0,max=30.)

 KEYWORD - VALID=(GNUPLOT,EPS)
 EPS Specifies POSTSCRIPT plotting, else GNUPLOT is assumed.
 If neither 'PLOTFMT nor PLOTOUT are specified the output table
 will still be generated with the name power.asc

 Specifies the filename of the file to which the POSTSCRIPT plot is written.
 If PLOTOUT is specified, PLOT is unnecessary.  Defaults to POWER.PLT.

 string - this parameter is used to add labeling to both the line printer
 graph and plotter graph. The maximum number of characters in the added
 label is 52. The title will be placed at the top of all the graphs gen-
 erated. No title is provided if TITLE is defaulted.

 string - this parameter is used to change the X - axis label in the plotter
 graph. The maximum number of characters in the string is 52. The default
 is FREQUENCY(CPS) where CPS can be interpreted as cycles per second or 
 cycles per sample.