ms2strv

       str=ms2strv(mat)
 convert a matrix of strings to a vector with the strings 
 delineated by commas.

 OR
       mat=ms2strv(str)
 convert a string vector containing commas to a matrix of
 strings where each string was separated by commas.

 EXAMPLE
  str='A,BB,CCC'
  mat=ms2strv(str)   mat =  A  
                            BB 
                            CCC
 OR
  str=ms2strv(mat)   str = A,BB,CCC