 Usage:  mysector = grcirclesector(radius,alpha1,alpha2)  
 
 Input:

  radius                 scalar radius of circle 
                         
  alpha1,alpha2          scalars angles enclosing the sector 
                         
 Output:

  mysector               composed graphical object 
                         
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(C) MD*TECH Method and Data Technologies, 17.8.2000
