implicit integer (a-z)
      common /ker/ n,rpsiz,spsiz,pad,numtry,oldtry,
                   fd,rmtinfd,rmtoutfd,state,padchar,
                   eol,eschar,quote,filnam(MAXLINE),recpkt(MAXPACK),
                   packet(MAXPACK),size,morefd,ibm,host,
                   localinfd,localoutfd,speed