$lines = Get-Content "samples\test_vda4913.txt"
foreach ($l in $lines) {
    if ($l.Length -lt 3) { continue }
    $rt = $l.Substring(0,3)
    Write-Host "=== Record $rt (len=$($l.Length)) ==="
    
    if ($rt -eq "711") {
        Write-Host "  [5-13]  targetId:  [$($l.Substring(5,9).Trim())]"
        Write-Host "  [14-22] sourceId:  [$($l.Substring(14,9).Trim())]"
        Write-Host "  [23-27] transNo1:  [$($l.Substring(23,5).Trim())]"
        Write-Host "  [28-32] transNo2:  [$($l.Substring(28,5).Trim())]"
        Write-Host "  [33-38] date:      [$($l.Substring(33,6).Trim())]"
    }
    elseif ($rt -eq "712") {
        Write-Host "  [5-12]  refNo:       [$($l.Substring(5,8).Trim())]"
        Write-Host "  [5-13]  refNo_alt:   [$($l.Substring(5,9).Trim())]"
        Write-Host "  [16-29] carrier:     [$($l.Substring(16,14).Trim())]"
        Write-Host "  [30-35] date:        [$($l.Substring(30,6).Trim())]"
        Write-Host "  [36-39] time:        [$($l.Substring(36,4).Trim())]"
        Write-Host "  [40-46] grossW(7c):  [$($l.Substring(40,7).Trim())]"
        Write-Host "  [47-53] netW(7c):    [$($l.Substring(47,7).Trim())]"
        Write-Host "  [40-48] grossW(9c):  [$($l.Substring(40,9).Trim())]"
        Write-Host "  [49-56] netW(8c):    [$($l.Substring(49,8).Trim())]"
    }
    elseif ($rt -eq "713") {
        Write-Host "  [5-12]  dnNo:        [$($l.Substring(5,8).Trim())]"
        Write-Host "  [13-18] date:        [$($l.Substring(13,6).Trim())]"
        Write-Host "  [19-23] unloadPt:    [$($l.Substring(19,5).Trim())]"
        Write-Host "  [24-29] extra1:      [$($l.Substring(24,6).Trim())]"
        Write-Host "  [30-37] orderNo:     [$($l.Substring(30,8).Trim())]"
        Write-Host "  [33-40] orderNo_alt: [$($l.Substring(33,8).Trim())]"
    }
    elseif ($rt -eq "714") {
        Write-Host "  [5-26]  custMat:     [$($l.Substring(5,22).Trim())]"
        Write-Host "  [27-48] suppMat:     [$($l.Substring(27,22).Trim())]"
        Write-Host "  [49-60] field49_12:  [$($l.Substring(49,12).Trim())]"
        Write-Host "  [53-64] field53_12:  [$($l.Substring(53,12).Trim())]"
        Write-Host "  [65-66] unit2c:      [$($l.Substring(65,2).Trim())]"
        Write-Host "  [61-62] unit_alt:    [$($l.Substring(61,2).Trim())]"
    }
    elseif ($rt -eq "715") {
        Write-Host "  [5-26]  packCust:    [$($l.Substring(5,22).Trim())]"
        Write-Host "  [27-48] packSupp:    [$($l.Substring(27,22).Trim())]"
        Write-Host "  [49-60] field49:     [$($l.Substring(49,12).Trim())]"
        Write-Host "  [61-72] field61:     [$($l.Substring(61,12).Trim())]"
        Write-Host "  [73-84] field73:     [$($l.Substring(73,12).Trim())]"
    }
}