def writeComment(doc_id, _base64_content, _base64_name='', password=''):
"""
>>> doc_id = '0706012057'
>>> _base64_content = '어찌하다가 우리가 이런일에\\n 아'
>>> _base64_name = '달수'
>>> password = '******'
>>> #dd = writeComment(doc_id, _base64_content, _base64_name, password)
>>> #dd.read()
>>> #'\\nOK\\n' # This is output
"""
data = Data()
data.cmd = "writeComment"
data.doc_id = doc_id
data._base64_content = _base64_content
data._base64_name = _base64_name
data.password = password
api = API(data)
fd = api.send()
result = fd.read()
fd.close()
return result
