Articulated tractors
63 tractor models on record. Membership: articulated chassis, from the evidence recorded for each machine.
- Models
- 63
- PTO measured
- 0
All 63 models
| Model | Years | Power, hp — engine or PTO, named per row | Class | Drive | Weight |
|---|---|---|---|---|---|
| 4 W-220 | 1982–1984 | 220Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 21,305 lbunballasted |
| 9110 | 1987–1990 | 197.3Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 20,150 lbunballasted |
| 9130 | 1987–1990 | 217.0Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 21,076 lbunballasted |
| 9150 | 1987–1990 | 276.1Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 25,993 lbunballasted |
| 9170 | 1987–1990 | 330.4Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 33,962 lbunballasted |
| 9180 | 1987–1990 | 369.9Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 35,583 lbunballasted |
| 9230 | 1990–1995 | 231.7Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 24,108 lbunballasted |
| 9250 | 1990–1995 | 296.0Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 30,060 lbunballasted |
| 9270 | 1990–1995 | 330.4Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 34,042 lbunballasted |
| 9280 | 1990–1995 | 374.8Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 34,674 lbunballasted |
| 9330 | 1995–2000 | 236.7Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 23,649 lbunballasted |
| 9350 | 1995–2000 | 306Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 28,722 lbunballasted |
| 9370 | 1995–2000 | 355.1Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 33,786 lbunballasted |
| 9380 | 1995–2000 | 394.5Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 31,581 lbunballasted |
| STX 275 | 2000–2005 | 271.3Engine power (gross or net not stated), claimed | WhichTractor size: Standard-size | 4WD / 4WD, equal wheels | 31,795 lbunballasted |
| STX 325 | 2000–2005 | 321Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD / 4WD, equal wheels | 31,934 lbunballasted |
| STX 375 | 2000–2005 | 369.9Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD / 4WD, equal wheels | 37,620 lbunballasted |
| STX 440 | 2000–2002 | 434.0Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD / 4WD, equal wheels | 39,500 lbunballasted |
| D 5505 Tandem | 1967 | 102.1Engine power (gross or net not stated), claimed | WhichTractor size: Standard-size | 4WD | 10,141 lbunballasted |
| 44-23 | 1979–1982 | 227.0Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 24,385 lbunballasted |
| 846 | 1988–1993 | 229.9Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 23,049 lbunballasted |
| 876 | 1988–1993 | 280.1Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 28,058 lbunballasted |
| 946 | 1989–1993 | 324.9Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 32,540 lbunballasted |
| 976 | 1988–1993 | 360.1Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 36,046 lbunballasted |
| FW-20 | 1977–1982 | 207.2Engine power (gross or net not stated), claimed | WhichTractor size: Standard-size | 4WD | 29,615 lbunballasted |
| FW-30 | 1977–1982 | 265.1Engine power (gross or net not stated), claimed | WhichTractor size: Standard-size | 4WD | 31,306 lbunballasted |
| FW-40 | 1977–1982 | 295Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 30,631 lbunballasted |
| FW-60 | 1977–1982 | 335Engine power (gross or net not stated), claimed | WhichTractor size: Standard-size | 4WD | 30,631 lbunballasted |
| 3388 | 1978–1981 | 128.6PTO, claimed | WhichTractor size: High-power | 4WD | 17,421 lbunballasted |
| 3588 | 1978–1981 | 152.1PTO, claimed | WhichTractor size: High-power | 4WD | 17,619 lbunballasted |
| 4186 | 1976–1978 | 152.7PTO, claimed | WhichTractor size: High-power | 4WD | 16,325 lbunballasted |
| 4786 | 1978–1981 | 258.4Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 30,201 lbunballasted |
| 7288 | 1985 | 172.6PTO, claimed | WhichTractor size: High-power | 4WD | 19,749 lbunballasted |
| 7388 | 1981 | 229.9Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 19,500 lbunballasted |
| 8560 | 1989–1993 | 232Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 32,075 lbunballasted |
| 8760 | 1989–1993 | 296.1Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 32,088 lbunballasted |
| 8960 | 1989–1993 | 365.2Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 35,109 lbunballasted |
| MF 1200 | 1972–1979 | 89.6PTO, claimed | WhichTractor size: Standard-size | 4WD | 12,787 lbunballasted |
| MF 4800 | 1980–1986 | 221.9Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 26,059 lbunballasted |
| 9184 | 2000–2001 | 236.7Engine power (gross or net not stated), claimed | WhichTractor size: Standard-size | 4WD | 24,972 lbunballasted |
| 9282 | 1995–1999 | 256.4Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD / 4WD, equal wheels | 24,972 lbunballasted |
| 9482 | 1995–1999 | 306Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD / 4WD, equal wheels | 30,166 lbunballasted |
| 9682 | 1995–1999 | 355.1Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD / 4WD, equal wheels | 32,029 lbunballasted |
| 9684 | 2000–2001 | 355.1Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD / 4WD, equal wheels | 30,794 lbunballasted |
| 9882 | 1995–1999 | 419.2Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD / 4WD, equal wheels | 31,835 lbunballasted |
| T 9020 | 2007–2010 | 330.4Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 32,296 lbunballasted |
| T 9030 | 2007–2010 | 379.8Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 41,780 lbunballasted |
| T 9040 | 2007–2010 | 429.0Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 41,780 lbunballasted |
| T 9050 | 2007–2010 | 478.3Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 43,854 lbunballasted |
| TJ-275 | 2001–2005 | 271.3Engine power (gross or net not stated), claimed | WhichTractor size: Standard-size | 4WD | 31,795 lbunballasted |
| TJ-325 | 2001–2005 | 321Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 31,934 lbunballasted |
| TJ-330 | 2001–2002 | 325.5Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 32,296 lbunballasted |
| TJ-375 | 2001–2005 | 369.9Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 37,620 lbunballasted |
| TJ-380 | 2005–2007 | 374.8Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 41,780 lbunballasted |
| TJ-430 | 2005–2007 | 424.2Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 41,780 lbunballasted |
| TJ-440 | 2001–2002 | 434.0Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 39,500 lbunballasted |
| TJ-450 | 2002–2005 | 444Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 39,500 lbunballasted |
| TJ-480 | 2005–2007 | 473Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 44,646 lbunballasted |
| 2455 | 1969–1970 | 137.1Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 17,300 lbunballasted |
| 4-180 | 1975–1978 | 210.1Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 20,600 lbunballasted |
| 4-210 | 1978–1983 | 207.1Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 23,735 lbunballasted |
| 4-225 | 1983–1987 | 221.9Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 22,758 lbunballasted |
| 4-270 | 1983–1988 | 266.3Engine power (gross or net not stated), claimed | WhichTractor size: High-power | 4WD | 30,214 lbunballasted |
Sources
Facts taken from these documents, units converted. Numbers beside a figure refer to this list. Licences and attribution
Show all 72 sources
- OECD Code 2 test report 2/1 791: New Holland 9882 — Licence not stated by the publisher; facts cited, OECD-1791 · published 1998-10-20 · retrieved 2026-09-14. OECD; testing station PAMI, Portage La Prairie, Canada. Original document
- OECD Code 2 test report 2/1 815: New Holland 9482 — Licence not stated by the publisher; facts cited, OECD-1815 · published 1999-03-31 · retrieved 2026-09-14. OECD; testing station PAMI, Portage La Prairie, Canada. Original document
- OECD Code 2 test report 2/1 816: New Holland 9682 — Licence not stated by the publisher; facts cited, OECD-1816 · published 1999-04-06 · retrieved 2026-09-14. OECD; testing station PAMI, Portage La Prairie, Canada. Original document
- OECD Code 2 test report 2/1 885: New Holland 9282 — Licence not stated by the publisher; facts cited, OECD-1885 · published 2000-02-17 · retrieved 2026-09-14. OECD; testing station PAMI, Portage la Prairie, Canada. Original document
- OECD Code 2 test report 2/1 942: New Holland 9684 — Licence not stated by the publisher; facts cited, OECD-1942 · published 2000-11-22 · retrieved 2026-09-14. OECD; testing station PAMI, Portage la Prairie, Canada. Original document
- OECD Code 2 test report 2/1 955: Case IH STX 375 — Licence not stated by the publisher; facts cited, OECD-1955 · published 2001-05-29 · retrieved 2026-09-14. OECD. Original document
- OECD Code 2 test report 2/1 957: Case IH STX 440 — Licence not stated by the publisher; facts cited, OECD-1957 · published 2001-05-31 · retrieved 2026-09-14. OECD. Original document
- OECD Code 2 test report 2/1 974: Case IH STX 325 — Licence not stated by the publisher; facts cited, OECD-1974 · published 2002-02-22 · retrieved 2026-09-14. OECD. Original document
- OECD Code 2 test report 2/1 975: Case IH STX 275 — Licence not stated by the publisher; facts cited, OECD-1975 · published 2002-02-28 · retrieved 2026-09-14. OECD. Original document
- Traktorenlexikon: Allis-Chalmers 4-W 220 — CC BY-SA 4.0, WIKIBOOKS-TL-123089 · revision 1090189. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Case-IH 9110 — CC BY-SA 4.0, WIKIBOOKS-TL-115579 · revision 978367. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Case-IH 9130 — CC BY-SA 4.0, WIKIBOOKS-TL-115580 · revision 978452. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Case-IH 9150 — CC BY-SA 4.0, WIKIBOOKS-TL-115581 · revision 1001609. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Case-IH 9170 — CC BY-SA 4.0, WIKIBOOKS-TL-115582 · revision 978425. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Case-IH 9180 — CC BY-SA 4.0, WIKIBOOKS-TL-115583 · revision 978427. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Case-IH 9230 — CC BY-SA 4.0, WIKIBOOKS-TL-115584 · revision 978453. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Case-IH 9250 — CC BY-SA 4.0, WIKIBOOKS-TL-115586 · revision 978460. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Case-IH 9270 — CC BY-SA 4.0, WIKIBOOKS-TL-115588 · revision 1001611. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Case-IH 9280 — CC BY-SA 4.0, WIKIBOOKS-TL-115589 · revision 1058485. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Case-IH 9330 — CC BY-SA 4.0, WIKIBOOKS-TL-115602 · revision 978926. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Case-IH 9350 — CC BY-SA 4.0, WIKIBOOKS-TL-115603 · revision 995380. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Case-IH 9370 — CC BY-SA 4.0, WIKIBOOKS-TL-115604 · revision 1068724. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Case-IH 9380 — CC BY-SA 4.0, WIKIBOOKS-TL-115605 · revision 1001612. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Case-IH STX 275 — CC BY-SA 4.0, WIKIBOOKS-TL-115861 · revision 985160. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Case-IH STX 325 — CC BY-SA 4.0, WIKIBOOKS-TL-115862 · revision 985163. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Case-IH STX 375 — CC BY-SA 4.0, WIKIBOOKS-TL-115863 · revision 985164. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Case-IH STX 440 — CC BY-SA 4.0, WIKIBOOKS-TL-115864 · revision 985168. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Deutz D 5505 Tandem — CC BY-SA 4.0, WIKIBOOKS-TL-53511 · revision 938059. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Fiat Fiat 44-23 — CC BY-SA 4.0, WIKIBOOKS-TL-108727 · revision 990880. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Ford Ford 846 — CC BY-SA 4.0, WIKIBOOKS-TL-110205 · revision 1055903. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Ford Ford 876 — CC BY-SA 4.0, WIKIBOOKS-TL-110220 · revision 917739. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Ford Ford 946 — CC BY-SA 4.0, WIKIBOOKS-TL-110221 · revision 917742. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Ford Ford 976 — CC BY-SA 4.0, WIKIBOOKS-TL-110222 · revision 917744. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Ford FW-20 — CC BY-SA 4.0, WIKIBOOKS-TL-78709 · revision 934734. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Ford FW-30 — CC BY-SA 4.0, WIKIBOOKS-TL-75530 · revision 934735. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Ford FW-40 — CC BY-SA 4.0, WIKIBOOKS-TL-110141 · revision 934732. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Ford FW-60 — CC BY-SA 4.0, WIKIBOOKS-TL-110142 · revision 1040399. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: IHC 3388 — CC BY-SA 4.0, WIKIBOOKS-TL-119175 · revision 1037668. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: IHC 3588 — CC BY-SA 4.0, WIKIBOOKS-TL-119176 · revision 1037669. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: IHC 4186 — CC BY-SA 4.0, WIKIBOOKS-TL-119111 · revision 1036816. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: IHC 4786 — CC BY-SA 4.0, WIKIBOOKS-TL-119192 · revision 1038059. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: IHC 7288 — CC BY-SA 4.0, WIKIBOOKS-TL-119181 · revision 1037713. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: IHC 7388 — CC BY-SA 4.0, WIKIBOOKS-TL-119193 · revision 1038060. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: John Deere 8560 — CC BY-SA 4.0, WIKIBOOKS-TL-53167 · revision 875196. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: John Deere 8760 — CC BY-SA 4.0, WIKIBOOKS-TL-53168 · revision 875523. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: John Deere 8960 — CC BY-SA 4.0, WIKIBOOKS-TL-53169 · revision 1005566. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Massey Ferguson MF 1200 — CC BY-SA 4.0, WIKIBOOKS-TL-83855 · revision 957159. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Massey Ferguson MF 4800 — CC BY-SA 4.0, WIKIBOOKS-TL-87124 · revision 992153. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: New Holland 9184 — CC BY-SA 4.0, WIKIBOOKS-TL-111175 · revision 1056100. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: New Holland 9282 — CC BY-SA 4.0, WIKIBOOKS-TL-111035 · revision 1056101. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: New Holland 9482 — CC BY-SA 4.0, WIKIBOOKS-TL-111162 · revision 993158. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: New Holland 9682 — CC BY-SA 4.0, WIKIBOOKS-TL-111163 · revision 993159. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: New Holland 9684 — CC BY-SA 4.0, WIKIBOOKS-TL-111185 · revision 993161. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: New Holland 9882 — CC BY-SA 4.0, WIKIBOOKS-TL-111164 · revision 993160. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: New Holland T9020 — CC BY-SA 4.0, WIKIBOOKS-TL-111560 · revision 993249. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: New Holland T9030 — CC BY-SA 4.0, WIKIBOOKS-TL-111567 · revision 993250. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: New Holland T9040 — CC BY-SA 4.0, WIKIBOOKS-TL-111579 · revision 993251. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: New Holland T9050 — CC BY-SA 4.0, WIKIBOOKS-TL-111580 · revision 993252. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: New Holland TJ275 — CC BY-SA 4.0, WIKIBOOKS-TL-111244 · revision 993201. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: New Holland TJ325 — CC BY-SA 4.0, WIKIBOOKS-TL-111245 · revision 993202. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: New Holland TJ330 — CC BY-SA 4.0, WIKIBOOKS-TL-111265 · revision 993206. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: New Holland TJ375 — CC BY-SA 4.0, WIKIBOOKS-TL-111250 · revision 993203. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: New Holland TJ380 — CC BY-SA 4.0, WIKIBOOKS-TL-111266 · revision 923819. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: New Holland TJ430 — CC BY-SA 4.0, WIKIBOOKS-TL-111267 · revision 923820. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: New Holland TJ440 — CC BY-SA 4.0, WIKIBOOKS-TL-111263 · revision 993200. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: New Holland TJ450 — CC BY-SA 4.0, WIKIBOOKS-TL-111264 · revision 993204. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: New Holland TJ480 — CC BY-SA 4.0, WIKIBOOKS-TL-111268 · revision 993207. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Oliver 2455 — CC BY-SA 4.0, WIKIBOOKS-TL-117569 · revision 1014972. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: White 4-180 — CC BY-SA 4.0, WIKIBOOKS-TL-122229 · revision 1080451. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: White 4-210 — CC BY-SA 4.0, WIKIBOOKS-TL-122230 · revision 1080454. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: White 4-225 — CC BY-SA 4.0, WIKIBOOKS-TL-122231 · revision 1080456. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: White 4-270 — CC BY-SA 4.0, WIKIBOOKS-TL-122232 · revision 1080457. Wikibooks contributors (Traktorenlexikon). Original document