Program sfrotvol | 3D volume rotation about a vertical axis 
[SYNOPSIS]
sfrotvol < inFile.rsf > outFile.rsf xf=0.f yf=0.f theta=0.f
[PARAMETERS]
float   | theta | =0.f |   | 	rotation angle 
float   | xf | =0.f |   | 	x-coord of the vertical axis 
float   | yf | =0.f |   | 	y-coord of the vertical axis 
[DIRECTORY]
user/aklokov
