rfc1341.ps

RFC 的详细文档！

2434(robustness)X
2870(across)X
3141(existing)X
3477(practice)X
3814(were)X
4032(two)X
720 1024(of)N
859(the)X
1036(highest)X
1373(priorities)X
1780(of)X
1919(the)X
2096(working)X
2474(group)X
2756(that)X
2959(developed)X
3413(this)X
3610(document.)X
4096(In)X
720 1136(particular,)N
1138(compatibility)X
1677(was)X
1850(always)X
2141(favored)X
2459(over)X
2654(elegance.)X
3 f
14 s
720 1376(2)N
1008(Notations,)X
1526(Conventions,)X
2180(and)X
2388(Generic)X
2796(BNF)X
3047(Grammar)X
1 f
12 s
720 1632(This)N
926(document)X
1341(is)X
1440(being)X
1689(published)X
2098(in)X
2208(two)X
2387(versions,)X
2766(one)X
2940(as)X
3055(plain)X
3283(ASCII)X
3568(text)X
3748(and)X
3922(one)X
4096(as)X
720 1744(PostScript.)N
1206(The)X
1399(latter)X
1641(is)X
1748(recommended,)X
2361(though)X
2671(the)X
2832(textual)X
3137(contents)X
3500(are)X
3660(identical.)X
4059(An)X
720 1856(Andrew-format)N
1342(copy)X
1553(of)X
1657(this)X
1820(document)X
2224(is)X
2312(also)X
2491(available)X
2864(from)X
3075(the)X
3217(\256rst)X
3390(author)X
3660(\(Borenstein\).)X
720 2080(Although)N
1111(the)X
1257(mechanisms)X
1761(speci\256ed)X
2131(in)X
2234(this)X
2401(document)X
2809(are)X
2955(all)X
3080(described)X
3477(in)X
3581(prose,)X
3842(most)X
4058(are)X
720 2192(also)N
911(described)X
1316(formally)X
1684(in)X
1795(the)X
1949(modi\256ed)X
2326(BNF)X
2547(notation)X
2898(of)X
3013(RFC)X
3229(822.)X
3456(Implementors)X
4026(will)X
720 2304(need)N
937(to)X
1047(be)X
1173(familiar)X
1514(with)X
1720(this)X
1894(notation)X
2245(in)X
2355(order)X
2593(to)X
2703(understand)X
3161(this)X
3336(speci\256cation,)X
3883(and)X
4058(are)X
720 2416(referred)N
1049(to)X
1148(RFC)X
1353(822)X
1521(for)X
1657(a)X
1724(complete)X
2102(explanation)X
2576(of)X
2680(the)X
2822(modi\256ed)X
3188(BNF)X
3398(notation.)X
720 2640(Some)N
964(of)X
1069(the)X
1212(modi\256ed)X
1579(BNF)X
1790(in)X
1890(this)X
2054(document)X
2459(makes)X
2730(reference)X
3114(to)X
3214(syntactic)X
3582(entities)X
3887(that)X
4058(are)X
720 2752(de\256ned)N
1044(in)X
1160(RFC)X
1382(822)X
1566(and)X
1745(not)X
1908(in)X
2023(this)X
2202(document.)X
2670(A)X
2779(complete)X
3173(formal)X
3470(grammar,)X
3882(then,)X
4112(is)X
720 2864(obtained)N
1089(by)X
1222(combining)X
1671(the)X
1827(collected)X
2214(grammar)X
2600(appendix)X
2991(of)X
3109(this)X
3286(document)X
3704(with)X
3913(that)X
4096(of)X
720 2976(RFC)N
925(822.)X
720 3200(The)N
894(term)X
1095(CRLF,)X
1383(in)X
1482(this)X
1646(document,)X
2075(refers)X
2319(to)X
2419(the)X
2562(sequence)X
2940(of)X
3045(the)X
3188(two)X
3357(ASCII)X
3632(characters)X
4048(CR)X
720 3312(\(13\))N
917(and)X
1092(LF)X
1240(\(10\))X
1436(which,)X
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1976(together,)X
2352(in)X
2463(this)X
2638(order,)X
2901(denote)X
3194(a)X
3273(line)X
3454(break)X
3704(in)X
3815(RFC)X
4032(822)X
720 3424(mail.)N
720 3648(The)N
895(term)X
1097("character)X
1515(set",)X
1710(wherever)X
2093(it)X
2172(is)X
2261(used)X
2462(in)X
2562(this)X
2726(document,)X
3155(refers)X
3399(to)X
3499(a)X
3567(coded)X
3822(character)X
720 3760(set,)N
919(in)X
1062(the)X
1248(sense)X
1524(of)X
1672(ISO)X
1894(character)X
2316(set)X
2491(standardization)X
3147(work,)X
3435(and)X
3641(must)X
3895(not)X
4085(be)X
720 3872(misinterpreted)N
1301(as)X
1405(meaning)X
1761("a)X
1867(set)X
1998(of)X
2102(characters.")X
720 4096(The)N
911(term)X
1130("message",)X
1600(when)X
1850(not)X
2015(further)X
2319(quali\256ed,)X
2722(means)X
3010(either)X
3272(the)X
3432(\(complete)X
3860(or)X
3982("top-)X
720 4208(level"\))N
1010(message)X
1367(being)X
1612(transferred)X
2060(on)X
2187(a)X
2260(network,)X
2629(or)X
2739(a)X
2812(message)X
3168(encapsulated)X
3696(in)X
3801(a)X
3874(body)X
4096(of)X
720 4320(type)N
910("message".)X
720 4544(The)N
895(term)X
1097("body)X
1353(part",)X
1591(in)X
1691(this)X
1855(document,)X
2284(means)X
2555(one)X
2719(of)X
2824(the)X
2967(parts)X
3179(of)X
3285(the)X
3429(body)X
3647(of)X
3753(a)X
3822(multipart)X
720 4656(entity.)N
990(A)X
1085(body)X
1303(part)X
1479(has)X
1633(a)X
1702(header)X
1985(and)X
2150(a)X
2219(body,)X
2460(so)X
2570(it)X
2649(makes)X
2920(sense)X
3153(to)X
3253(speak)X
3497(about)X
3736(the)X
3879(body)X
4096(of)X
720 4768(a)N
787(body)X
1003(part.)X
720 4992(The)N
898(term)X
1103("entity",)X
1453(in)X
1556(this)X
1723(document,)X
2155(means)X
2429(either)X
2677(a)X
2748(message)X
3102(or)X
3211(a)X
3283(body)X
3504(part.)X
3707(All)X
3859(kinds)X
4096(of)X
720 5104(entities)N
1023(share)X
1250(the)X
1392(property)X
1742(that)X
1911(they)X
2101(have)X
2307(a)X
2374(header)X
2655(and)X
2818(a)X
2885(body.)X
720 5328(The)N
894(term)X
1095("body",)X
1413(when)X
1645(not)X
1792(further)X
2078(quali\256ed,)X
2463(means)X
2733(the)X
2875(body)X
3092(of)X
3197(an)X
3313(entity,)X
3582(that)X
3752(is)X
3841(the)X
3984(body)X
720 5440(of)N
824(either)X
1068(a)X
1135(message)X
1485(or)X
1589(of)X
1693(a)X
1760(body)X
1976(part.)X
720 6160(Borenstein)N
1161(&)X
1260(Freed)X
3853([Page)X
4096(3])X

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12 s 12 xH 0 xS 1 f
720 400(RFC)N
925(1341)X
1545(MIME:)X
1857(Multipurpose)X
2399(Internet)X
2723(Mail)X
2929(Extensions)X
3784(June)X
3984(1992)X
720 800(Note)N
942(:)X
1004(the)X
1157(previous)X
1523(four)X
1718(de\256nitions)X
2159(are)X
2312(clearly)X
2610(circular.)X
2988(This)X
3194(is)X
3293(unavoidable,)X
3824(since)X
4058(the)X
720 912(overal)N
985(structure)X
1346(of)X
1450(a)X
1517(MIME)X
1802(message)X
2152(is)X
2240(indeed)X
2521(recursive.)X
720 1136(In)N
824(this)X
987(document,)X
1415(all)X
1536(numeric)X
1876(and)X
2039(octet)X
2251(values)X
2521(are)X
2663(given)X
2901(in)X
3000(decimal)X
3330(notation.)X
720 1360(It)N
808(must)X
1024(be)X
1144(noted)X
1387(that)X
1562(Content-Type)X
2127(values,)X
2427(subtypes,)X
2817(and)X
2986(parameter)X
3402(names)X
3678(as)X
3788(de\256ned)X
4101(in)X
720 1472(this)N
888(document)X
1297(are)X
1444(case-insensitive.)X
2131(However,)X
2536(parameter)X
2951(values)X
3226(are)X
3373(case-sensitive)X
3936(unless)X
720 1584(otherwise)N
1118(speci\256ed)X
1484(for)X
1620(the)X
1762(speci\256c)X
2080(parameter.)X
720 1808(FORMATTING)N
1372(NOTE:)X
1703(This)X
1898(document)X
2302(has)X
2455(been)X
2662(carefully)X
3030(formatted)X
3430(for)X
3567(ease)X
3758(of)X
3863(reading.)X
720 1920(The)N
902(PostScript)X
1329(version)X
1644(of)X
1756(this)X
1927(document,)X
2363(in)X
2470(particular,)X
2895(places)X
3167(notes)X
3401(like)X
3577(this)X
3747(one,)X
3941(which)X
720 2032(may)N
913(be)X
1031(skipped)X
1358(by)X
1482(the)X
1628(reader,)X
1921(in)X
2024(a)X
2095(smaller,)X
2431 0.3063(italicized,)AX
2838(font,)X
3045(and)X
3212(indents)X
3518(it)X
3600(as)X
3708(well.)X
3950(In)X
4058(the)X
720 2144(text)N
899(version,)X
1240(only)X
1445(the)X
1596(indentation)X
2063(is)X
2160(preserved,)X
2591(so)X
2709(if)X
2801(you)X
2978(are)X
3129(reading)X
3451(the)X
3602(text)X
3780(version)X
4096(of)X
720 2256(this)N
883(you)X
1051(might)X
1300(consider)X
1650(using)X
1882(the)X
2024(PostScript)X
2444(version)X
2752(instead.)X
3074(However,)X
3475(all)X
3597(such)X
3798(notes)X
4026(will)X
720 2368(be)N
852(indented)X
1225(and)X
1405(preceded)X
1793(by)X
1929("NOTE:")X
2330(or)X
2450(some)X
2693(similar)X
3001(introduction,)X
3536(even)X
3758(in)X
3873(the)X
4031(text)X
720 2480(version.)N
720 2704(The)N
912(primary)X
1259(purpose)X
1605(of)X
1727(these)X
1967(non-essential)X
2517(notes)X
2762(is)X
2868(to)X
2985(convey)X
3305(information)X
3802(about)X
4058(the)X
720 2816(rationale)N
1115(of)X
1252(this)X
1448(document,)X
1909(or)X
2046(to)X
2178(place)X
2438(this)X
2633(document)X
3069(in)X
3200(the)X
3374(proper)X
3681(historical)X
4096(or)X
720 2928(evolutionary)N
1257(context.)X
1639(Such)X
1881(information)X
2386(may)X
2602(be)X
2743(skipped)X
3092(by)X
3238(those)X
3492(who)X
3708(are)X
3877(focused)X
720 3040(entirely)N
1042(on)X
1165(building)X
1513(a)X
1583(compliant)X
1996 0.2366(implementation,)AX
2653(but)X
2803(may)X
2996(be)X
3113(of)X
3219(use)X
3373(to)X
3474(those)X
3703(who)X
3894(wish)X
4101(to)X
720 3152(understand)N
1166(why)X
1355(this)X
1518(document)X
1922(is)X
2010(written)X
2307(as)X
2411(it)X
2489(is.)X
720 3376(For)N
879(ease)X
1071(of)X
1177(recognition,)X
1666(all)X
1789(BNF)X
2002(de\256nitions)X
2435(have)X
2644(been)X
2853(placed)X
3132(in)X
3234(a)X
3304(\256xed-width)X
3774(font)X
3956(in)X
4058(the)X
720 3488(PostScript)N
1139(version)X
1446(of)X
1550(this)X
1713(document.)X
3 f
14 s
720 3952(3)N
1008(The)X
1222(M)X
1328(IM)X
1478(E-Version)X
1992(Header)X
2375(Field)X
1 f
12 s
720 4176(Since)N
959(RFC)X
1165(822)X
1334(was)X
1508(published)X
1907(in)X
2007(1982,)X
2248(there)X
2466(has)X
2619(really)X
2864(been)X
3071(only)X
3267(one)X
3431(format)X
3713(standard)X
4064(for)X
720 4288(Internet)N
1046(messages,)X
1459(and)X
1624(there)X
1843(has)X
1997(been)X
2205(little)X
2409(perceived)X
2810(need)X
3018(to)X
3119(declare)X
3424(the)X
3568(format)X
3850(standard)X
720 4400(in)N
853(use.)X
1087(This)X
1316(document)X
1754(is)X
1876(an)X
2025(independent)X
2554(document)X
2992(that)X
3195(complements)X
3768(RFC)X
4008(822.)X
720 4512(Although)N
1125(the)X
1285(extensions)X
1733(in)X
1850(this)X
2031(document)X
2453(have)X
2677(been)X
2901(de\256ned)X
3226(in)X
3343(such)X
3561(a)X
3646(way)X
3848(as)X
3969(to)X
4085(be)X
720 4624(compatible)N
1175(with)X
1372(RFC)X
1579(822,)X
1773(there)X
1992(are)X
2136(still)X
2307(circumstances)X
2879(in)X
2980(which)X
3241(it)X
3321(might)X
3572(be)X
3689(desirable)X
4064(for)X
720 4736(a)N
816(mail-processing)X
1484(agent)X
1746(to)X
1874(know)X
2140(whether)X
2503(a)X
2599(message)X
2978(was)X
3180(composed)X
3623(with)X
3846(the)X
4016(new)X
720 4848(standard)N
1070(in)X
1169(mind.)X
720 5072(Therefore,)N
1160(this)X
1335(document)X
1752(de\256nes)X
2061(a)X
2141(new)X
2338(header)X
2632(\256eld,)X
2864("MIME-Version",)X
3600(which)X
3872(is)X
3973(to)X
4085(be)X
720 5184(used)N
920(to)X
1019(declare)X
1322(the)X
1464(version)X
1771(of)X
1875(the)X
2017(Internet)X
2341(message)X
2691(body)X
2907(format)X
3188(standard)X
3538(in)X
3637(use.)X
720 5408(Messages)N
1135(composed)X
1567(in)X
1684(accordance)X
2160(with)X
2373(this)X
2555(document)X
2978(MUST)X
3287(include)X
3614(such)X
3833(a)X
3919(header)X
720 5520(\256eld,)N
939(with)X
1134(the)X
1276(following)X
1674(verbatim)X
2041(text:)X
720 6160(Borenstein)N
1161(&)X
1260(Freed)X
3853([Page)X
4096(4])X

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12 s 12 xH 0 xS 1 f
7 f
1 f
720 400(RFC)N
925(1341)X
1545(MIME:)X
1857(Multipurpose)X
2399(Internet)X
2723(Mail)X
2929(Extensions)X
3784(June)X
3984(1992)X
7 f
720 688 0.4062(MIME-Version:)AN
1532(1.0)X
1 f
720 912(The)N
900(presence)X
1267(of)X
1377(this)X
1546(header)X
1834(\256eld)X
2036(is)X
2131(an)X
2253(assertion)X
2626(that)X
2802(the)X
2951(message)X
3308(has)X
3467(been)X
3680(composed)X
4101(in)X