docs: def toxml(self):
          """
          Exports this object into a LEMS XML object
          """
  
          return '<Dimension name="{0}"'.format(self.name) +\
            (' m = "{0}"'.format(self.m) if self.m != 0 else '') +\
            (' l = "{0}"'.format(self.l) if self.l != 0 else '') +\
            (' t = "{0}"'.format(self.t) if self.t != 0 else '') +\
            (' i = "{0}"'.format(self.i) if self.i != 0 else '') +\
            (' k = "{0}"'.format(self.k) if self.k != 0 else '') +\
            (' n = "{0}"'.format(self.n) if self.n != 0 else '') +\
            (' j = "{0}"'.format(self.j) if self.j != 0 else '') +\
            '/>'