def label(self, index, *args):
self.data['<STR_LIT>'].append(<EOL>str('<STR_LIT>'%(index, '<STR_LIT:|>'.join(map(str,args)) )).replace('<STR_LIT:None>','<STR_LIT>')<EOL>)<EOL>return self.parent<EOL>
Label each axes one at a time
args are of the form <label 1>,...,<label n>
APIPARAM: chxl