1·Standby credits are already governed by the Uniform Customs and Practice for Documentary credits (UCP) (1983 Revision NO. 400).
备用信用证业已由《跟单信用证统一惯例(ucp)》(1983年版，第400号出版物)来调整。
2·Therefore, it is significant to do research on standby letter of credits in the theory and reality.
因此，对备用信用证的法律问题进行研究不仅有理论意义，而且有迫切的现实意义。