 Usage:  opt = cartsplitopt (s1 {, s2{, s3, ...}})  
 
 Input:

  s1, s3 s5              string 
                         
  s2, s4, s6             numerical values 
                         
 Output:

  opt                    list of optional parameters 
                         
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(C) MD*TECH Method and Data Technologies, 17.8.2000
