All header variables.
ACADMAINTVER¶RC, DXF 90
ANGBASE¶BD, DXF 50
ANGDIR¶B, DXF 70
APPID_CONTROL_OBJECT¶H
ATTDIA¶B, DXF 70
ATTMODE¶BS, DXF 70
ATTREQ¶B, DXF 70
AUNITS¶BS, DXF 70
AUPREC¶BS, DXF 70
AXISMODE¶BS, DXF 70
AXISUNIT¶2RD, DXF 20
BACKZ¶BD
BLIPMODE¶B, DXF 70
BLOCK_CONTROL_OBJECT¶H
BLOCK_RECORD_MSPACE¶H
BLOCK_RECORD_PSPACE¶H
CAMERADISPLAY¶B, DXF 290
CAMERAHEIGHT¶BD, DXF 40
CECOLOR¶CMC, DXF 62
CELTSCALE¶BD, DXF 40
CELTYPE¶H, DXF 6
CELWEIGHT¶BSd, DXF 370
CEPSNTYPE¶BS, DXF 380
CHAMFERA¶BD, DXF 40
CHAMFERB¶BD, DXF 40
CHAMFERC¶BD, DXF 40
CHAMFERD¶BD, DXF 40
CLAYER¶H, DXF 8
CMATERIAL¶H, DXF 347
CMLJUST¶BS, DXF 70
CMLSCALE¶BD, DXF 40
CMLSTYLE¶H, DXF 2
COORDS¶BS, DXF 70
CPSNID¶H, DXF 390
CSHADOW¶RC, DXF 280
DELOBJ¶B, DXF 70
DGNFRAME¶RC, DXF 280
DICTIONARY_ACAD_GROUP¶H
DICTIONARY_ACAD_MLINESTYLE¶H
DICTIONARY_COLOR¶H
DICTIONARY_LAYOUT¶H
DICTIONARY_LIGHTLIST¶H
DICTIONARY_MATERIAL¶H
DICTIONARY_NAMED_OBJECT¶H
DICTIONARY_PLOTSETTINGS¶H
DICTIONARY_PLOTSTYLENAME¶H
DICTIONARY_VISUALSTYLE¶H
DIMADEC¶BS, DXF 70
DIMALT¶B, DXF 70
DIMALTD¶BS, DXF 70
DIMALTF¶BD, DXF 40
DIMALTMZF¶BD
DIMALTMZS¶T, DXF 1
DIMALTRND¶BD, DXF 40
DIMALTTD¶BS, DXF 70
DIMALTTZ¶BS, DXF 70
DIMALTU¶BS, DXF 70
DIMALTZ¶BS, DXF 70
DIMAPOST¶TV, DXF 1
DIMAPOST_T¶T
DIMARCSYM¶BS, DXF 70
DIMARROW¶BD
DIMASO¶B, DXF 70
DIMASSOC¶RC, DXF 280
DIMASZ¶BD, DXF 40
DIMATFIT¶BS, DXF 70
DIMAUNIT¶BS, DXF 70
DIMAZIN¶BS, DXF 70
DIMBLK¶H, DXF 1
DIMBLK1¶H, DXF 1
DIMBLK1_T¶T
DIMBLK2¶H, DXF 1
DIMBLK2_T¶T
DIMBLK_T¶T
DIMCEN¶BD, DXF 40
DIMCLRD¶CMC, DXF 70
DIMCLRD_C¶RS
DIMCLRE¶CMC, DXF 70
DIMCLRE_C¶RS
DIMCLRT¶CMC, DXF 70
DIMCLRT_C¶RS
DIMDEC¶BS, DXF 70
DIMDLE¶BD, DXF 40
DIMDLI¶BD, DXF 40
DIMDSEP¶BS, DXF 70
DIMEXE¶BD, DXF 40
DIMEXO¶BD, DXF 40
DIMFIT¶BS, DXF 70
DIMFRAC¶BS, DXF 70
DIMFXL¶BD, DXF 40
DIMFXLON¶B, DXF 70
DIMGAP¶BD, DXF 40
DIMJOGANG¶BD, DXF 40
DIMJUST¶BS, DXF 70
DIMLDRBLK¶H, DXF 1
DIMLFAC¶BD, DXF 40
DIMLIM¶B, DXF 70
DIMLTEX1¶H, DXF 6
DIMLTEX2¶H, DXF 6
DIMLTYPE¶H, DXF 6
DIMLUNIT¶BS, DXF 70
DIMLWD¶BSd, DXF 70
DIMLWE¶BSd, DXF 70
DIMMZF¶BD
DIMMZS¶T, DXF 1
DIMPOST¶TV, DXF 1
DIMPOST_T¶T
DIMRND¶BD, DXF 40
DIMSAH¶B, DXF 70
DIMSAV¶B
DIMSCALE¶BD, DXF 40
DIMSD1¶B, DXF 70
DIMSD2¶B, DXF 70
DIMSE1¶B, DXF 70
DIMSE2¶B, DXF 70
DIMSHO¶B, DXF 70
DIMSOXD¶B, DXF 70
DIMSTYLE¶H, DXF 2
DIMSTYLE_CONTROL_OBJECT¶H
DIMTAD¶BS, DXF 70
DIMTDEC¶BS, DXF 70
DIMTFAC¶BD, DXF 40
DIMTFILL¶BS, DXF 70
DIMTFILLCLR¶CMC, DXF 70
DIMTIH¶B, DXF 70
DIMTIX¶B, DXF 70
DIMTM¶BD, DXF 40
DIMTMOVE¶BS, DXF 70
DIMTOFL¶B, DXF 70
DIMTOH¶B, DXF 70
DIMTOL¶B, DXF 70
DIMTOLJ¶BS, DXF 70
DIMTP¶BD, DXF 40
DIMTSZ¶BD, DXF 40
DIMTVP¶BD, DXF 40
DIMTXSTY¶H, DXF 7
DIMTXT¶BD, DXF 40
DIMTXTDIRECTION¶B, DXF 70
DIMTZIN¶BS, DXF 70
DIMUNIT¶BS, DXF 70
DIMUPT¶B, DXF 70
DIMZIN¶BS, DXF 70
DISPSILH¶B, DXF 70
DRAGMODE¶BS, DXF 70
DRAGVS¶H, DXF 349
DWFFRAME¶RC, DXF 280
DWGCODEPAGE¶TV, DXF 3
ELEVATION¶BD, DXF 40
ENDCAPS¶B, DXF 280
EXTMAX¶3BD, DXF 30
EXTMIN¶3BD, DXF 30
EXTNAMES¶B, DXF 290
FACETRES¶BD
FASTZOOM¶B, DXF 70
FILLETRAD¶BD, DXF 40
FILLMODE¶B, DXF 70
FINGERPRINTGUID¶TV, DXF 2
FLAGS¶BL
FLATLAND¶B, DXF 70
FRONTZ¶BD
GRIDMODE¶RS, DXF 70
GRIDUNIT¶2RD, DXF 20
HALOGAP¶RC, DXF 280
HANDLING¶BS, DXF 70
HANDSEED¶H, DXF 5
HIDETEXT¶RC, DXF 280
HYPERLINKBASE¶T, DXF 1
INDEXCTL¶RC, DXF 280
INSBASE¶3BD, DXF 30
INSUNITS¶BS, DXF 70
INTERFERECOLOR¶CMC, DXF 62
INTERFEREOBJVS¶H, DXF 345
INTERFEREVPVS¶H, DXF 346
INTERSECTIONCOLOR¶BS, DXF 70
INTERSECTIONDISPLAY¶RC, DXF 280
ISOLINES¶BS
JOINSTYLE¶B, DXF 280
LATITUDE¶BD, DXF 40
LAYER_CONTROL_OBJECT¶H
LENSLENGTH¶BD, DXF 40
LIGHTGLYPHDISPLAY¶RC, DXF 280
LIMCHECK¶B, DXF 70
LIMMAX¶2DPOINT, DXF 20
LIMMIN¶2DPOINT, DXF 20
LOFTANG1¶BD, DXF 40
LOFTANG2¶BD, DXF 40
LOFTMAG1¶BD, DXF 40
LOFTMAG2¶BD, DXF 40
LOFTNORMALS¶RC, DXF 280
LOFTPARAM¶BS, DXF 70
LONGITUDE¶BD, DXF 40
LTSCALE¶BD, DXF 40
LTYPE_BYBLOCK¶H
LTYPE_BYLAYER¶H
LTYPE_CONTINUOUS¶H
LTYPE_CONTROL_OBJECT¶H
LUNITS¶BS, DXF 70
LUPREC¶BS, DXF 70
LWDISPLAY¶B, DXF 290
MAXACTVP¶BS, DXF 70
MEASUREMENT¶BS, DXF 70
MENU¶TV, DXF 1
MENUEXT¶RC
MIRRTEXT¶B, DXF 70
NORTHDIRECTION¶BD, DXF 40
OBSCOLOR¶BS, DXF 70
OBSLTYPE¶RC, DXF 280
OLESTARTUP¶B, DXF 290
ORTHOMODE¶B, DXF 70
OSMODE¶BS, DXF 70
PDMODE¶BS, DXF 70
PDSIZE¶BD, DXF 40
PELEVATION¶BD, DXF 40
PELLIPSE¶B
PEXTMAX¶3BD, DXF 30
PEXTMIN¶3BD, DXF 30
PICKSTYLE¶BS, DXF 70
PINSBASE¶3BD, DXF 30
PLIMCHECK¶B, DXF 70
PLIMMAX¶2DPOINT, DXF 20
PLIMMIN¶2DPOINT, DXF 20
PLINEGEN¶B, DXF 70
PLINEWID¶BD, DXF 40
PROJECTNAME¶TV, DXF 1
PROXYGRAPHICS¶BS, DXF 70
PSLTSCALE¶B, DXF 70
PSOLHEIGHT¶BD, DXF 40
PSOLWIDTH¶BD, DXF 40
PSTYLEMODE¶B, DXF 290
PSVPSCALE¶BD, DXF 40
PUCSBASE¶H, DXF 2
PUCSNAME¶H, DXF 2
PUCSORG¶3BD, DXF 30
PUCSORGBACK¶3BD, DXF 30
PUCSORGBOTTOM¶3BD, DXF 30
PUCSORGFRONT¶3BD, DXF 30
PUCSORGLEFT¶3BD, DXF 30
PUCSORGRIGHT¶3BD, DXF 30
PUCSORGTOP¶3BD, DXF 30
PUCSORTHOREF¶H, DXF 2
PUCSORTHOVIEW¶BS, DXF 70
PUCSXDIR¶3BD, DXF 30
PUCSYDIR¶3BD, DXF 30
QTEXTMODE¶B, DXF 70
REALWORLDSCALE¶B, DXF 290
REGENMODE¶B, DXF 70
REQUIREDVERSIONS¶BLL, DXF 160
SAVEIMAGES¶BS
SHADEDGE¶BS, DXF 70
SHADEDIF¶BS, DXF 70
SHADOWPLANELOCATION¶BD, DXF 40
SHOWHIST¶RC, DXF 280
SKETCHINC¶BD, DXF 40
SKPOLY¶B, DXF 70
SNAPANG¶RD, DXF 50
SNAPBASE¶2RD, DXF 20
SNAPISOPAIR¶RS, DXF 70
SNAPMODE¶RS, DXF 70
SNAPSTYLE¶RS, DXF 70
SNAPUNIT¶2RD, DXF 20
SOLIDHIST¶RC, DXF 280
SORTENTS¶RC, DXF 280
SPLFRAME¶B, DXF 70
SPLINESEGS¶BS, DXF 70
SPLINETYPE¶BS, DXF 70
STEPSIZE¶BD, DXF 40
STEPSPERSEC¶BD, DXF 40
STYLESHEET¶TV, DXF 1
STYLE_CONTROL_OBJECT¶H
SURFTAB1¶BS, DXF 70
SURFTAB2¶BS, DXF 70
SURFTYPE¶BS, DXF 70
SURFU¶BS, DXF 70
SURFV¶BS, DXF 70
TARGET¶3BD
TDCREATE¶TIMEBLL, DXF 40
TDINDWG¶TIMEBLL, DXF 40
TDUCREATE¶TIMEBLL, DXF 40
TDUPDATE¶TIMEBLL, DXF 40
TDUSRTIMER¶TIMEBLL, DXF 40
TDUUPDATE¶TIMEBLL, DXF 40
TEXTQLTY¶BS
TEXTSIZE¶BD, DXF 40
TEXTSTYLE¶H, DXF 7
THICKNESS¶BD, DXF 40
TILEMODE¶B, DXF 70
TILEMODELIGHTSYNCH¶RC, DXF 280
TIMEZONE¶BL, DXF 70
TRACEWID¶BD, DXF 40
TREEDEPTH¶BSd, DXF 70
TSTACKALIGN¶BS
TSTACKSIZE¶BS
UCSBASE¶H, DXF 2
UCSICON¶RC
UCSNAME¶H, DXF 2
UCSORG¶3BD, DXF 30
UCSORGBACK¶3BD, DXF 30
UCSORGBOTTOM¶3BD, DXF 30
UCSORGFRONT¶3BD, DXF 30
UCSORGLEFT¶3BD, DXF 30
UCSORGRIGHT¶3BD, DXF 30
UCSORGTOP¶3BD, DXF 30
UCSORTHOREF¶H, DXF 2
UCSORTHOVIEW¶BS, DXF 70
UCSXDIR¶3BD, DXF 30
UCSYDIR¶3BD, DXF 30
UCS_CONTROL_OBJECT¶H
UNITMODE¶BS, DXF 70
USERI1¶BSd, DXF 70
USERI2¶BSd, DXF 70
USERI3¶BSd, DXF 70
USERI4¶BSd, DXF 70
USERI5¶BSd, DXF 70
USERR1¶BD, DXF 40
USERR2¶BD, DXF 40
USERR3¶BD, DXF 40
USERR4¶BD, DXF 40
USERR5¶BD, DXF 40
USRTIMER¶B, DXF 70
VERSIONGUID¶TV, DXF 2
VIEWCTR¶3RD, DXF 20
VIEWDIR¶3BD, DXF 30
VIEWMODE¶B
VIEWSIZE¶RD, DXF 40
VIEWTWIST¶BD
VIEW_CONTROL_OBJECT¶H
VISRETAIN¶B, DXF 70
VPOINTX¶3RD
VPOINTXALT¶3RD
VPOINTY¶3RD
VPOINTYALT¶3RD
VPOINTZ¶3RD
VPOINTZALT¶3RD
VPORT_CONTROL_OBJECT¶H
VX_CONTROL_OBJECT¶H
VX_TABLE_RECORD¶H
WIREFRAME¶B
WORLDVIEW¶B, DXF 70
XCLIPFRAME¶RC, DXF 290
XEDIT¶B, DXF 290
_3DDWFPREC¶BD, DXF 40
aspect_ratio¶RD
bitsize¶RL
bitsize_hi¶RL
circle_zoom_percent¶RS
codepage¶RS
dwg_size¶RL
flag_3d¶RS
layer_colors¶RS
numentities¶RS
oldCECOLOR_hi¶RL
oldCECOLOR_lo¶RL
size¶RL
unit1_name¶TV
unit1_ratio¶BD
unit2_name¶TV
unit2_ratio¶BD
unit3_name¶TV
unit3_ratio¶BD
unit4_name¶TV
unit4_ratio¶BD
unknown_10¶BS
unknown_11¶B
unknown_12¶BL
unknown_13¶BL
unknown_14¶BL
unknown_14b¶BL
unknown_15¶BL
unknown_16¶BL
unknown_17¶BL
unknown_20¶H
unknown_21¶BL
unknown_22¶BL
unknown_23¶BD
unknown_4f2¶RL
unknown_5¶RS
unknown_51e¶RS
unknown_520¶RS
unknown_52c¶RSd
unknown_52e¶RS
unknown_530¶RC
unknown_54¶BS
unknown_55¶BS
unknown_56¶BS
unknown_57¶BS
unknown_59¶RS
unknown_6¶RS
unknown_6a¶RS
unknown_6b¶RS
unknown_6c¶RS
unknown_8¶BL
unknown_9¶BL
unknown_day¶RS
unknown_hour¶RS
unknown_min¶RS
unknown_mon¶RS
unknown_ms¶RS
unknown_sec¶RS
unknown_string¶T
unknown_year¶RS