Control break processing

open file
read first record
perform until eof
    move countryName to countryNameWS
    move 0 to countryTOtal

    perform until countryName IS NOT countryNameWS or EOF
        move customerName to customerNameWS
        move 0 to custTotal

        perform until custName IS NOT custNameWS or countryName IS NOT countryNameWS or EOF
            add sales to custTotal
            read next record
        end-perform
        //break in customer(Name)
        display custNameWS & custTotal
        add custTotal to countryTotal
    end-perform
    //break in country
    dispaly countryNameWS & countryTotal
end-perform
close file