RND =round
R/O =room only（without breakfast）（for hotel business）
ROC =refer to our cable
ROC8/2=refer to our cable dated Feb.8
ROL =refer to our letter
RO/RO=roll on/roll off
R/O/T=roll on tube（for textiles business）
ROT =refer to our telegram（telex）
ROTLX=refer to our telex
RPT =repeat,report
RPTN =repetition
RPY =reply
RQST =request
REPON=responsible（bility）
R.S.V.P.=please reply（repondez s'il vous plait）
RTRN =return
RYC =refer to your cable
RYL =refer to your letter
RYT =refer to your telex
RYTLX=refer to your telex of August 24
RYTLX24/8=refer to your telex of August 24
，外贸函电常用缩略语(6)