 Usage:  z = normal (d1 {, ..., dn})  
 
 Input:

  d1, ..., dn            scalar (number of elements in dimension 1 ... n) 
                         
 Output:

  z                      d1 x d2 x ... x dn matrix containing pseudo random variables with a standard normal distribution 
                         
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(C) MD*TECH Method and Data Technologies, 17.8.2000
