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MacOS 8.1
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Win98
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DOS
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This file was processed as: Mailbox/MIME Entity
(archive/mbox).
Confidence | Program | Detection | Match Type | Support
|
---|
100%
| dexvert
| Mailbox/MIME Entity (archive/mbox)
| magic
| Supported |
100%
| dexvert
| Internet Message Format (text/imf)
| magic
| Supported |
1%
| dexvert
| Text File (text/txt)
| fallback
| Supported |
100%
| file
| Mailbox text, 1st line "From std-unix-request@uunet.uu.net Thu Aug 30 14:19:34 1990", ASCII text
| default
| |
100%
| TrID
| E-Mail message (Var. 2)
| default
| |
100%
| checkBytes
| Printable ASCII
| default
| |
100%
| perlTextCheck
| Likely Text (Perl)
| default
| |
100%
| siegfried
| x-fmt/111 Plain Text File
| default
| |
100%
| detectItEasy
| Format: plain text[LF]
| default (weak)
| |
100%
| xdgMime
| application/mbox
| default
|
|
hex view+--------+-------------------------+-------------------------+--------+--------+
|00000000| 46 72 6f 6d 20 73 74 64 | 2d 75 6e 69 78 2d 72 65 |From std|-unix-re|
|00000010| 71 75 65 73 74 40 75 75 | 6e 65 74 2e 75 75 2e 6e |quest@uu|net.uu.n|
|00000020| 65 74 20 20 54 68 75 20 | 41 75 67 20 33 30 20 31 |et Thu |Aug 30 1|
|00000030| 34 3a 31 39 3a 33 34 20 | 31 39 39 30 0a 52 65 63 |4:19:34 |1990.Rec|
|00000040| 65 69 76 65 64 3a 20 66 | 72 6f 6d 20 63 73 2e 75 |eived: f|rom cs.u|
|00000050| 74 65 78 61 73 2e 65 64 | 75 20 62 79 20 75 75 6e |texas.ed|u by uun|
|00000060| 65 74 2e 75 75 2e 6e 65 | 74 20 28 35 2e 36 31 2f |et.uu.ne|t (5.61/|
|00000070| 31 2e 31 34 29 20 77 69 | 74 68 20 53 4d 54 50 20 |1.14) wi|th SMTP |
|00000080| 0a 09 69 64 20 41 41 30 | 33 32 36 38 3b 20 54 68 |..id AA0|3268; Th|
|00000090| 75 2c 20 33 30 20 41 75 | 67 20 39 30 20 31 34 3a |u, 30 Au|g 90 14:|
|000000a0| 31 39 3a 33 34 20 2d 30 | 34 30 30 0a 50 6f 73 74 |19:34 -0|400.Post|
|000000b0| 65 64 2d 44 61 74 65 3a | 20 33 30 20 41 75 67 20 |ed-Date:| 30 Aug |
|000000c0| 39 30 20 31 35 3a 30 37 | 3a 30 34 20 47 4d 54 0a |90 15:07|:04 GMT.|
|000000d0| 52 65 63 65 69 76 65 64 | 3a 20 62 79 20 63 73 2e |Received|: by cs.|
|000000e0| 75 74 65 78 61 73 2e 65 | 64 75 20 28 35 2e 36 34 |utexas.e|du (5.64|
|000000f0| 2f 31 2e 37 36 29 20 0a | 46 72 6f 6d 3a 20 70 72 |/1.76) .|From: pr|
|00000100| 65 65 63 65 40 75 72 62 | 61 6e 61 2e 6d 63 64 2e |eece@urb|ana.mcd.|
|00000110| 6d 6f 74 2e 63 6f 6d 20 | 28 53 63 6f 74 74 20 45 |mot.com |(Scott E|
|00000120| 2e 20 50 72 65 65 63 65 | 29 0a 4e 65 77 73 67 72 |. Preece|).Newsgr|
|00000130| 6f 75 70 73 3a 20 63 6f | 6d 70 2e 73 74 64 2e 75 |oups: co|mp.std.u|
|00000140| 6e 69 78 0a 53 75 62 6a | 65 63 74 3a 20 52 65 3a |nix.Subj|ect: Re:|
|00000150| 20 53 74 61 6e 64 61 72 | 64 73 20 55 70 64 61 74 | Standar|ds Updat|
|00000160| 65 2c 20 49 45 45 45 20 | 31 30 30 33 2e 34 3a 20 |e, IEEE |1003.4: |
|00000170| 52 65 61 6c 2d 74 69 6d | 65 20 45 78 74 65 6e 73 |Real-tim|e Extens|
|00000180| 69 6f 6e 73 0a 4d 65 73 | 73 61 67 65 2d 49 64 3a |ions.Mes|sage-Id:|
|00000190| 20 3c 34 37 38 40 75 73 | 65 6e 69 78 2e 4f 52 47 | <478@us|enix.ORG|
|000001a0| 3e 0a 52 65 66 65 72 65 | 6e 63 65 73 3a 20 3c 34 |>.Refere|nces: <4|
|000001b0| 34 38 40 75 73 65 6e 69 | 78 2e 4f 52 47 3e 20 3c |48@useni|x.ORG> <|
|000001c0| 34 36 37 40 75 73 65 6e | 69 78 2e 4f 52 47 3e 20 |467@usen|ix.ORG> |
|000001d0| 3c 34 37 30 40 75 73 65 | 6e 69 78 2e 4f 52 47 3e |<470@use|nix.ORG>|
|000001e0| 0a 53 65 6e 64 65 72 3a | 20 73 74 64 2d 75 6e 69 |.Sender:| std-uni|
|000001f0| 78 40 75 73 65 6e 69 78 | 2e 4f 52 47 0a 4f 72 67 |x@usenix|.ORG.Org|
|00000200| 61 6e 69 7a 61 74 69 6f | 6e 3a 20 4d 6f 74 6f 72 |anizatio|n: Motor|
|00000210| 6f 6c 61 20 4d 43 44 2c | 20 55 72 62 61 6e 61 20 |ola MCD,| Urbana |
|00000220| 44 65 73 69 67 6e 20 43 | 65 6e 74 65 72 0a 58 2d |Design C|enter.X-|
|00000230| 53 75 62 6d 69 73 73 69 | 6f 6e 73 3a 20 73 74 64 |Submissi|ons: std|
|00000240| 2d 75 6e 69 78 40 75 75 | 6e 65 74 2e 75 75 2e 6e |-unix@uu|net.uu.n|
|00000250| 65 74 0a 44 61 74 65 3a | 20 33 30 20 41 75 67 20 |et.Date:| 30 Aug |
|00000260| 39 30 20 31 35 3a 30 37 | 3a 30 34 20 47 4d 54 0a |90 15:07|:04 GMT.|
|00000270| 52 65 70 6c 79 2d 54 6f | 3a 20 73 74 64 2d 75 6e |Reply-To|: std-un|
|00000280| 69 78 40 75 75 6e 65 74 | 2e 75 75 2e 6e 65 74 0a |ix@uunet|.uu.net.|
|00000290| 54 6f 3a 20 73 74 64 2d | 75 6e 69 78 40 75 75 6e |To: std-|unix@uun|
|000002a0| 65 74 2e 75 75 2e 6e 65 | 74 0a 0a 46 72 6f 6d 3a |et.uu.ne|t..From:|
|000002b0| 20 20 70 72 65 65 63 65 | 40 75 72 62 61 6e 61 2e | preece|@urbana.|
|000002c0| 6d 63 64 2e 6d 6f 74 2e | 63 6f 6d 20 28 53 63 6f |mcd.mot.|com (Sco|
|000002d0| 74 74 20 45 2e 20 50 72 | 65 65 63 65 29 0a 0a 7c |tt E. Pr|eece)..||
|000002e0| 20 46 72 6f 6d 3a 20 20 | 73 70 40 6d 79 73 74 65 | From: |sp@myste|
|000002f0| 72 6f 6e 2e 6f 73 66 2e | 6f 72 67 20 28 53 69 6d |ron.osf.|org (Sim|
|00000300| 6f 6e 20 50 61 74 69 65 | 6e 63 65 29 0a 0a 7c 20 |on Patie|nce)..| |
|00000310| 54 68 65 20 72 65 61 73 | 6f 6e 20 66 6f 72 20 73 |The reas|on for s|
|00000320| 65 6d 61 70 68 6f 72 65 | 73 20 6e 6f 74 20 62 65 |emaphore|s not be|
|00000330| 69 6e 67 20 69 6e 20 74 | 68 65 20 66 69 6c 65 20 |ing in t|he file |
|00000340| 73 79 73 74 65 6d 20 69 | 73 20 74 77 6f 66 6f 6c |system i|s twofol|
|00000350| 64 2e 20 53 6f 6d 65 0a | 7c 20 72 65 61 6c 74 69 |d. Some.|| realti|
|00000360| 6d 65 20 65 6d 62 65 64 | 64 65 64 20 73 79 73 74 |me embed|ded syst|
|00000370| 65 6d 73 20 64 6f 20 6e | 6f 74 20 68 61 76 65 20 |ems do n|ot have |
|00000380| 61 20 66 69 6c 65 20 73 | 79 73 74 65 6d 20 62 75 |a file s|ystem bu|
|00000390| 74 20 64 6f 20 77 61 6e | 74 20 73 65 6d 61 70 68 |t do wan|t semaph|
|000003a0| 6f 72 65 73 0a 7c 20 53 | 6f 20 74 68 69 73 20 61 |ores.| S|o this a|
|000003b0| 6c 6c 6f 77 73 20 74 68 | 65 6d 20 74 6f 20 68 61 |llows th|em to ha|
|000003c0| 76 65 20 74 68 65 6d 20 | 77 69 74 68 6f 75 74 20 |ve them |without |
|000003d0| 68 61 76 69 6e 67 20 74 | 6f 20 62 72 69 6e 67 20 |having t|o bring |
|000003e0| 69 6e 20 74 68 65 20 62 | 61 67 67 61 67 65 20 61 |in the b|aggage a|
|000003f0| 0a 7c 20 66 69 6c 65 20 | 73 79 73 74 65 6d 20 77 |.| file |system w|
|00000400| 6f 75 6c 64 20 65 6e 74 | 61 69 6c 2e 0a 2d 2d 2d |ould ent|ail..---|
|00000410| 0a 49 20 64 6f 6e 27 74 | 20 63 61 72 65 20 77 68 |.I don't| care wh|
|00000420| 65 74 68 65 72 20 74 68 | 65 79 20 68 61 76 65 20 |ether th|ey have |
|00000430| 73 6f 6d 65 74 68 69 6e | 67 20 74 68 61 74 20 6c |somethin|g that l|
|00000440| 6f 6f 6b 73 20 6c 69 6b | 65 20 55 4e 49 58 20 66 |ooks lik|e UNIX f|
|00000450| 69 6c 65 73 79 73 74 65 | 6d 0a 63 6f 64 65 20 6f |ilesyste|m.code o|
|00000460| 72 20 6e 6f 74 2c 20 6f | 72 20 77 68 65 74 68 65 |r not, o|r whethe|
|00000470| 72 20 74 68 65 79 20 68 | 61 76 65 20 64 69 73 6b |r they h|ave disk|
|00000480| 20 64 72 69 76 65 73 20 | 6f 72 20 6e 6f 74 2c 20 | drives |or not, |
|00000490| 62 75 74 20 49 20 64 6f | 6e 27 74 20 74 68 69 6e |but I do|n't thin|
|000004a0| 6b 0a 69 74 27 73 20 75 | 6e 72 65 61 73 6f 6e 61 |k.it's u|nreasona|
|000004b0| 62 6c 65 20 74 6f 20 72 | 65 71 75 69 72 65 20 74 |ble to r|equire t|
|000004c0| 68 65 6d 20 74 6f 20 68 | 61 6e 64 6c 65 20 73 65 |hem to h|andle se|
|000004d0| 6d 61 70 68 6f 72 65 20 | 6e 61 6d 65 73 20 61 73 |maphore |names as|
|000004e0| 20 74 68 6f 75 67 68 0a | 74 68 65 79 20 77 65 72 | though.|they wer|
|000004f0| 65 20 69 6e 20 61 20 66 | 69 6c 65 73 79 73 74 65 |e in a f|ilesyste|
|00000500| 6d 20 6e 61 6d 65 73 70 | 61 63 65 2e 20 20 4f 74 |m namesp|ace. Ot|
|00000510| 68 65 72 77 69 73 65 20 | 79 6f 75 27 72 65 20 67 |herwise |you're g|
|00000520| 6f 69 6e 67 20 74 6f 20 | 65 6e 64 20 75 70 0a 77 |oing to |end up.w|
|00000530| 69 74 68 20 61 20 63 6f | 6c 6c 65 63 74 69 6f 6e |ith a co|llection|
|00000540| 20 6f 66 20 69 6e 64 65 | 70 65 6e 64 65 6e 74 20 | of inde|pendent |
|00000550| 66 65 61 74 75 72 65 73 | 2c 20 65 61 63 68 20 6d |features|, each m|
|00000560| 69 6e 69 6d 61 6c 6c 79 | 20 73 70 65 63 69 66 69 |inimally| specifi|
|00000570| 65 64 20 73 6f 0a 74 68 | 61 74 20 69 74 20 63 61 |ed so.th|at it ca|
|00000580| 6e 20 77 6f 72 6b 20 77 | 69 74 68 6f 75 74 20 61 |n work w|ithout a|
|00000590| 73 73 75 6d 69 6e 67 20 | 61 6e 79 74 68 69 6e 67 |ssuming |anything|
|000005a0| 20 65 6c 73 65 2c 20 61 | 6e 64 20 61 6e 79 6f 6e | else, a|nd anyon|
|000005b0| 65 20 77 69 74 68 20 61 | 6e 79 0a 73 65 6e 73 65 |e with a|ny.sense|
|000005c0| 20 69 73 20 67 6f 69 6e | 67 20 74 6f 20 73 61 79 | is goin|g to say|
|000005d0| 20 22 59 75 63 6b 22 20 | 61 6e 64 20 75 73 65 20 | "Yuck" |and use |
|000005e0| 61 20 72 65 61 6c 20 6f | 70 65 72 61 74 69 6e 67 |a real o|perating|
|000005f0| 20 73 79 73 74 65 6d 20 | 74 68 61 74 0a 70 72 6f | system |that.pro|
|00000600| 76 69 64 65 73 20 72 65 | 61 73 6f 6e 61 62 6c 65 |vides re|asonable|
|00000610| 20 69 6e 74 65 67 72 61 | 74 69 6f 6e 20 61 6e 64 | integra|tion and|
|00000620| 20 66 6f 72 20 61 20 75 | 6e 69 66 6f 72 6d 20 6e | for a u|niform n|
|00000630| 6f 74 69 6f 6e 20 6f 66 | 2c 20 61 6d 6f 6e 67 20 |otion of|, among |
|00000640| 6f 74 68 65 72 0a 74 68 | 69 6e 67 73 2c 20 6e 61 |other.th|ings, na|
|00000650| 6d 69 6e 67 2e 0a 2d 2d | 2d 0a 7c 20 2e 2e 2e 09 |ming..--|-.| ....|
|00000660| 09 20 53 65 63 6f 6e 64 | 6c 79 2c 20 61 73 20 66 |. Second|ly, as f|
|00000670| 61 72 20 61 73 20 74 68 | 72 65 61 64 73 2c 20 77 |ar as th|reads, w|
|00000680| 68 69 63 68 20 61 72 65 | 20 73 75 70 70 6f 73 65 |hich are| suppose|
|00000690| 64 20 74 6f 0a 7c 20 62 | 65 20 6c 69 67 68 74 20 |d to.| b|e light |
|000006a0| 77 65 69 67 68 74 2c 20 | 61 72 65 20 63 6f 6e 63 |weight, |are conc|
|000006b0| 65 72 6e 65 64 20 69 74 | 20 61 6c 6c 6f 77 73 20 |erned it| allows |
|000006c0| 73 65 6d 61 70 68 6f 72 | 65 73 20 74 6f 20 62 65 |semaphor|es to be|
|000006d0| 20 69 6d 70 6c 6d 65 6e | 74 65 64 20 69 6e 20 75 | implmen|ted in u|
|000006e0| 73 65 72 0a 7c 20 73 70 | 61 63 65 20 72 61 74 68 |ser.| sp|ace rath|
|000006f0| 65 72 20 74 68 61 6e 20 | 66 6f 72 63 69 6e 67 20 |er than |forcing |
|00000700| 74 68 65 6d 20 69 6e 74 | 6f 20 74 68 65 20 6b 65 |them int|o the ke|
|00000710| 72 6e 65 6c 20 66 6f 72 | 20 74 68 65 20 66 69 6c |rnel for| the fil|
|00000720| 65 20 73 79 73 74 65 6d | 2e 0a 2d 2d 2d 0a 45 68 |e system|..---.Eh|
|00000730| 3f 20 20 49 20 64 6f 6e | 27 74 20 6b 6e 6f 77 20 |? I don|'t know |
|00000740| 77 68 61 74 20 74 68 65 | 20 67 72 6f 75 70 20 68 |what the| group h|
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|00000760| 65 20 74 68 65 20 62 61 | 6c 6c 6f 74 2c 20 62 75 |e the ba|llot, bu|
|00000770| 74 20 69 74 0a 77 6f 75 | 6c 64 20 73 65 65 6d 20 |t it.wou|ld seem |
|00000780| 74 68 61 74 20 75 73 69 | 6e 67 20 61 20 66 69 6c |that usi|ng a fil|
|00000790| 65 73 79 73 74 65 6d 20 | 6e 61 6d 65 20 6f 6e 6c |esystem |name onl|
|000007a0| 79 20 6d 61 6b 65 73 20 | 61 20 64 69 66 66 65 72 |y makes |a differ|
|000007b0| 65 6e 63 65 20 77 68 65 | 6e 20 79 6f 75 0a 66 69 |ence whe|n you.fi|
|000007c0| 72 73 74 20 73 70 65 63 | 69 66 79 20 79 6f 75 27 |rst spec|ify you'|
|000007d0| 72 65 20 67 6f 69 6e 67 | 20 74 6f 20 62 65 20 6c |re going| to be l|
|000007e0| 6f 6f 6b 69 6e 67 20 61 | 74 20 61 20 70 61 72 74 |ooking a|t a part|
|000007f0| 69 63 75 6c 61 72 20 73 | 65 6d 61 70 68 6f 72 65 |icular s|emaphore|
|00000800| 2c 0a 77 68 69 63 68 20 | 73 68 6f 75 6c 64 6e 27 |,.which |shouldn'|
|00000810| 74 20 62 65 20 61 20 63 | 72 69 74 69 63 61 6c 20 |t be a c|ritical |
|00000820| 70 61 74 68 20 65 76 65 | 6e 74 2e 20 20 41 66 74 |path eve|nt. Aft|
|00000830| 65 72 20 74 68 61 74 20 | 79 6f 75 20 75 73 65 20 |er that |you use |
|00000840| 61 20 66 69 6c 65 0a 64 | 65 73 63 72 69 70 74 6f |a file.d|escripto|
|00000850| 72 2c 20 77 68 69 63 68 | 20 49 20 74 68 69 6e 6b |r, which| I think|
|00000860| 20 63 6f 75 6c 64 20 62 | 65 20 68 61 6e 64 6c 65 | could b|e handle|
|00000870| 64 20 69 6e 20 75 73 65 | 72 20 73 70 61 63 65 20 |d in use|r space |
|00000880| 61 62 6f 75 74 20 61 73 | 20 77 65 6c 6c 0a 61 73 |about as| well.as|
|00000890| 20 61 6e 79 74 68 69 6e | 67 20 65 6c 73 65 2e 20 | anythin|g else. |
|000008a0| 20 49 6e 20 65 69 74 68 | 65 72 20 63 61 73 65 20 | In eith|er case |
|000008b0| 79 6f 75 27 72 65 20 67 | 6f 69 6e 67 20 74 6f 20 |you're g|oing to |
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|00000900| 6c 6f 63 6b 20 6f 72 20 | 77 68 65 6e 20 79 6f 75 |lock or |when you|
|00000910| 20 72 65 6c 65 61 73 65 | 0a 74 68 65 20 73 65 6d | release|.the sem|
|00000920| 61 70 68 6f 72 65 29 2e | 0a 2d 2d 2d 0a 7c 20 41 |aphore).|.---.| A|
|00000930| 20 67 6f 6f 64 20 72 65 | 61 73 6f 6e 20 66 6f 72 | good re|ason for|
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|00000980| 72 6b 20 49 50 43 20 74 | 6f 20 75 73 65 20 74 68 |rk IPC t|o use th|
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|000009a0| 73 2e 20 49 66 20 79 6f | 75 20 68 61 76 65 20 49 |s. If yo|u have I|
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|000009d0| 74 68 65 6e 20 74 77 6f | 20 6d 61 63 68 69 6e 65 |then two| machine|
|000009e0| 73 20 77 68 6f 20 68 61 | 76 65 20 61 70 70 6c 69 |s who ha|ve appli|
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|00000a10| 77 6f 75 6c 64 20 61 6c | 73 6f 20 68 61 76 65 20 |would al|so have |
|00000a20| 74 6f 20 68 61 76 65 20 | 61 74 20 6c 65 61 73 74 |to have |at least|
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|00000a70| 6e 20 74 72 69 76 69 61 | 6c 20 74 6f 20 61 72 72 |n trivia|l to arr|
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|00000bd0| 66 6f 72 20 61 6e 79 20 | 6e 65 77 20 50 4f 53 49 |for any |new POSI|
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|00000c10| 2a 20 6e 61 6d 65 73 70 | 61 63 65 20 73 6f 20 74 |* namesp|ace so t|
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|00000c30| 20 67 65 6e 65 72 61 6c | 20 74 6f 6f 6c 73 20 74 | general| tools t|
|00000c40| 68 61 74 20 6f 6e 6c 79 | 20 6e 65 65 64 20 74 6f |hat only| need to|
|00000c50| 20 6b 6e 6f 77 20 61 62 | 6f 75 74 20 6f 6e 65 20 | know ab|out one |
|00000c60| 6e 61 6d 65 73 70 61 63 | 65 2e 0a 2d 2d 0a 73 63 |namespac|e..--.sc|
|00000c70| 6f 74 74 20 70 72 65 65 | 63 65 0a 6d 6f 74 6f 72 |ott pree|ce.motor|
|00000c80| 6f 6c 61 2f 6d 63 64 20 | 75 72 62 61 6e 61 20 64 |ola/mcd |urbana d|
|00000c90| 65 73 69 67 6e 20 63 65 | 6e 74 65 72 09 31 31 30 |esign ce|nter.110|
|00000ca0| 31 20 65 2e 20 75 6e 69 | 76 65 72 73 69 74 79 2c |1 e. uni|versity,|
|00000cb0| 20 75 72 62 61 6e 61 2c | 20 69 6c 20 20 20 36 31 | urbana,| il 61|
|00000cc0| 38 30 31 0a 75 75 63 70 | 3a 09 75 75 6e 65 74 21 |801.uucp|:.uunet!|
|00000cd0| 75 69 75 63 75 78 63 21 | 75 64 63 21 70 72 65 65 |uiucuxc!|udc!pree|
|00000ce0| 63 65 2c 09 20 61 72 70 | 61 3a 09 70 72 65 65 63 |ce,. arp|a:.preec|
|00000cf0| 65 40 75 72 62 61 6e 61 | 2e 6d 63 64 2e 6d 6f 74 |e@urbana|.mcd.mot|
|00000d00| 2e 63 6f 6d 0a 0a 56 6f | 6c 75 6d 65 2d 4e 75 6d |.com..Vo|lume-Num|
|00000d10| 62 65 72 3a 20 56 6f 6c | 75 6d 65 20 32 31 2c 20 |ber: Vol|ume 21, |
|00000d20| 4e 75 6d 62 65 72 20 37 | 35 0a 0a |Number 7|5.. |
+--------+-------------------------+-------------------------+--------+--------+