worklog.indent() yields a duplicate worklog that is indented relative to worklog.
        worklog.indent(x) indents x times.

def indent(self, n=1):
        '''
        worklog.indent() yields a duplicate worklog that is indented relative to worklog.
        worklog.indent(x) indents x times.
        '''
        return WorkLog(columns=self.columns,
                       bullet=(self.blanks + self.bullet),
                       stdout=self.stdout, stderr=self.stderr)