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subroutine chkmsg(message,cok,nspecial,flip)
character message*22,cok*3
nspecial=0
flip=1.0
cok=" "
do i=22,1,-1
if(message(i:i).ne.' ') go to 10
enddo
i=22
10 if(i.ge.11) then
if((message(i-3:i).eq.' OOO') .or. (message(20:22).eq.' OO')) then
cok='OOO'
flip=-1.0
if(message(20:22).eq.' OO') then
message=message(1:19)
else
message=message(1:i-4)
endif
endif
endif
if(message.eq.'RO ') nspecial=2
if(message.eq.'RRR ') nspecial=3
if(message.eq.'73 ') nspecial=4
return
end subroutine chkmsg
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