human
I wrote the below code

    if (not auth.s3_has_role(ADMIN)):
        auth.permission.fail()
    tablename = 'msg_mcommons_channel'
    table = s3db[tablename]
    table.name.label = T('Account    Name')
    table.name.comment = DIV(_class='tooltip', _title=('%s|%s' % (T('Account    Name'), T('Name    for    your    Mobile    Commons    Account'))))
    table.campaign_id.label = T('Campaign    ID')
    table.url.label = T('URL')
    table.url.comment = DIV(_class='tooltip', _title=('%s|%s' % (T('URL'), T('URL    for    the    Mobile    Commons    API'))))
    table.username.label = T('Username')
    table.password.label = T('Password')
    table.timestmp.label = T('Last    Downloaded')
    table.timestmp.writable = False
    s3.crud_strings[tablename] = Storage(title_display=T('Mobile    Commons    Setting    Details'), title_list=T('Mobile    Commons    Settings'), label_create=T('Add    Mobile    Commons    Settings'), title_update=T('Edit    Mobile    Commons    Settings'), label_list_button=T('View    Mobile    Commons    Settings'), msg_record_created=T('Mobile    Commons    Setting    added'), msg_record_deleted=T('Mobile    Commons    Setting    deleted'), msg_list_empty=T('No    Mobile    Commons    Settings    currently    defined'), msg_record_modified=T('Mobile    Commons    settings    updated'))
    def postp(r, output):
        if r.interactive:
            s3_action_buttons(r)
            table = r.table
            query = (table.deleted == False)
            rows = db(query).select(table.id, table.enabled)
            restrict_e = [str(row.id) for row in rows if (not row.enabled)]
            restrict_d = [str(row.id) for row in rows if row.enabled]
            from s3 import s3_str
            s3.actions += [dict(label=s3_str(T('Enable')), _class='action-btn', url=URL(args=['[id]', 'enable']), restrict=restrict_e), dict(label=s3_str(T('Disable')), _class='action-btn', url=URL(args=['[id]', 'disable']), restrict=restrict_d)]
            if (not s3task._is_alive()):
                s3.actions +=...

What's a good function header?
 ... Here's a good function header?
assistant
#Here's a good function header.

def mcommons_channel():