A List of all the AutoCAD System variables and their meanings.
ACADLSPASDOC: Controls whether AutoCAD loads the acad.lsp file into every drawing or just the first drawing opened in an AutoCAD session.
ACADPREFIX: Stores the directory path, if any, specified by the ACAD environment variable, with path separators appended if necessary.
ACADVER: Stores the AutoCAD version number.
ACISOUTVER: Controls the ACIS version of SAT files created using the ACISOUT command.
AFLAGS: Sets attribute flags for ATTDEF bit-code.
ANGBASE: Sets the base angle 0 with respect to the current UCS.
ANGDIR: Sets the positive angle direction from angle 0 with respect to the current UCS.
APBOX: Turns the AutoSnap aperture box on or off.
APERTURE: Sets object snap target height, in pixels.
AREA: Stores the last area computed by AREA, LIST, or DBLIST.
ATTDIA: Controls whether -INSERT uses a dialog box for attribute value entry.
ATTMODE: Controls display of attributes.
ATTREQ: Determines whether INSERT uses default attribute settings during insertion of blocks.
AUDITCTL: Controls whether AUDIT creates an audit report (ADT) file.
AUNITS: Sets units for angles.
AUPREC: Sets the number of decimal places for angular units.
AUTOSNAP: Controls AutoSnap marker, tooltip, and magnet.
BACKZ: Stores the back clipping plane offset from the target plane for the current viewport.
BINDTYPE: Controls how xref names are handled when binding xrefs or editing xrefs in-place.
BLIPMODE: Controls whether marker blips are visible.
CDATE: Sets calendar date and time.
CECOLOR: Sets the color of new objects.
CELTSCALE: Sets the current object linetype scaling factor.
CELTYPE: Sets the linetype of new objects.
CELWEIGHT: Sets the lineweight of new objects.
CHAMFERA: Sets the first chamfer distance.
CHAMFERB: Sets the second chamfer distance.
CHAMFERC: Sets the chamfer length.
CHAMFERD: Sets the chamfer angle.
CHAMMODE: Sets the input method by which AutoCAD creates chamfers.
CIRCLERAD: Sets the default circle radius.
CLAYER: Sets the current layer.
CMDACTIVE: Stores the bit-code that indicates whether an ordinary command, transparent command, script, or dialog box is active.
CMDECHO: Controls whether AutoCAD echoes prompts and input during the AutoLISP (command) function.
CMDNAMES: Displays the names of the active and transparent commands.
CMLJUST: Specifies multiline justification.
CMLSCALE: Controls the overall width of a multiline.
CMLSTYLE: Sets the multiline style.
COMPASS: Controls whether the 3D compass is on or off in the current viewport.
COORDS: Controls when coordinates are updated on the status line.
CPLOTSTYLE: Controls the current plot style for new objects.
CPROFILE: Stores the name of the current profile.
CTAB: Returns the name of the current (model or layout) tab in the drawing. Provides a means for the user to determine which tab is active.
CURSORSIZE: Determines the size of the crosshairs as a percentage of the screen size.
CVPORT: Sets the identification number of the current viewport.
DATE: Stores the current date and time.
DBMOD: Indicates the drawing modification status using bit-code.
DCTCUST: Displays the path and file name of the current custom spelling dictionary.
DCTMAIN: Displays the file name of the current main spelling dictionary.
DEFLPLSTYLE: Specifies the default plot style for new layers.
DEFPLSTYLE: Specifies the default plot style for new objects.
DELOBJ: Controls whether objects used to create other objects are retained or deleted from the drawing database.
DEMANDLOAD: Specifies if and when AutoCAD demand loads a third-party application if a drawing contains custom objects created in that application.
DIASTAT: Stores the exit method of the most recently used dialog box.
DIMADEC: Controls the number of places of precision displayed for angular dimensions.
DIMALT: Controls the display of alternate units in dimensions.
DIMALTD: Controls the number of decimal places in alternate units.
DIMALTF: Controls the multiplier for alternate units.
DIMALTRND: Determines rounding of alternate units.
DIMALTTD: Sets the number of decimal places for the tolerance values in the alternate units of a dimension.
DIMALTTZ: Toggles suppression of zeros in tolerance values.
DIMALTU: Sets the units format for alternate units of all dimension style family members except angular.
DIMALTZ: Controls the suppression of zeros for alternate unit dimension values.
DIMAPOST: Specifies a text prefix or suffix (or both) to the alternate dimension measurement for all types of dimensions except angular.
DIMASO: Controls the associativity of dimension objects.
DIMASZ: Controls the size of dimension line and leader line arrowheads.
DIMATFIT: Determines how dimension text and arrows are arranged when space is not sufficient to place both within the extension lines.
DIMAUNIT: Sets the units format for angular dimensions.
DIMAZIN: Suppresses zeros for angular dimensions.
DIMBLK: Sets the arrowhead block displayed at the ends of dimension lines or leader lines.
DIMBLK1: Sets the arrowhead for the first end of the dimension line when DIMSAH is on.
DIMBLK2: Sets the arrowhead for the second end of the dimension line when DIMSAH is on.
DIMCEN: Controls drawing of circle or arc center marks and centerlines by DIMCENTER, DIMDIAMETER, and DIMRADIUS.
DIMCLRD: Assigns colors to dimension lines, arrowheads, and dimension leader lines.
DIMCLRE: Assigns colors to dimension extension lines.
DIMCLRT: Assigns colors to dimension text.
DIMDEC: Sets the number of decimal places displayed for the primary units of a dimension.
DIMDLE: Sets the distance the dimension line extends beyond the extension line when oblique strokes are drawn instead of arrowheads.
DIMDLI: Controls the spacing of dimension lines in baseline dimensions.
DIMDSEP: Specifies a single character decimal separator to use when creating dimensions whose unit format is decimal.
DIMEXE: Specifies how far to extend the extension line beyond the dimension line.
DIMEXO: Specifies how far extension lines are offset from origin points.
DIMFIT: Obsolete. Replaced by DIMATFIT and DIMTMOVE.
DIMFRAC: Sets the fraction format when DIMLUNIT is set to 4 or 5.
DIMGAP: Sets the distance around the dimension text when the dimension line breaks to accommodate dimension text.
DIMJUST: Controls the horizontal positioning of dimension text.
DIMLDRBLK: Specifies the arrow type for leaders.
DIMLFAC: Sets a scale factor for linear dimension measurements.
DIMLIM: Generates dimension limits as the default text.
DIMLUNIT: Sets units for all dimension types except Angular.
DIMLWD: Assigns lineweight to dimension lines.
DIMLWE: Assigns lineweight to extension lines.
DIMPOST: Specifies a text prefix or suffix (or both) to the dimension measurement.
DIMRND: Rounds all dimensioning distances to the specified value.
DIMSAH: Controls the display of dimension line arrowhead blocks.
DIMSCALE: Sets the overall scale factor applied to dimensioning variables that specify sizes, distances, or offsets.
DIMSD1: Controls suppression of the first dimension line.
DIMSD2: Controls suppression of the second dimension line.
DIMSE1: Suppresses display of the first extension line.
DIMSE2: Suppresses display of the second extension line.
DIMSHO: Controls redefinition of dimension objects while dragging.
DIMSOXD: Suppresses drawing of dimension lines outside the extension lines.
DIMSTYLE: Shows the current dimension style.
DIMTAD: Controls the vertical position of text in relation to the dimension line.
DIMTDEC: Sets the number of decimal places to display in tolerance values for the primary units in a dimension.
DIMTFAC: Sets a scale factor used to calculate the height of text for dimension fractions and tolerances.
DIMTIH: Controls the position of dimension text inside the extension lines for all dimension types except ordinate.
DIMTIX: Draws text between extension lines.
DIMTM: When DIMTOL or DIMLIM is on, sets the minimum (or lower) tolerance limit for dimension text.
DIMTMOVE: Sets dimension text movement rules.
DIMTOFL: Controls whether a dimension line is drawn between the extension lines even when the text is placed outside.
DIMTOH: Controls the position of dimension text outside the extension lines.
DIMTOL: Appends tolerances to dimension text.
DIMTOLJ: Sets the vertical justification for tolerance values relative to the nominal dimension text.
DIMTP: When DIMTOL or DIMLIM is on, sets the maximum (or upper) tolerance limit for dimension text.
DIMTSZ: Specifies the size of oblique strokes drawn instead of arrowheads for linear, radius, and diameter dimensioning.
DIMTVP: Controls the vertical position of dimension text above or below the dimension line.
DIMTXSTY: Specifies the text style of the dimension.
DIMTXT: Specifies the height of dimension text, unless the current text style has a fixed height.
DIMTZIN: Controls the suppression of zeros in tolerance values.
DIMUNIT: Obsolete. Replaced by DIMLUNIT and DIMFRAC.
DIMUPT: Controls options for user-positioned text.
DIMZIN: Controls the suppression of zeroes in the primary unit value.
DISPSILH: Controls display of silhouette curves of solid objects in Wireframe mode.
DISTANCE: Stores the distance computed by DIST.
DONUTID: Sets the default for the inside diameter of a donut.
DONUTOD: Sets the default for the outside diameter of a donut.
DRAGMODE: Controls the display of objects being dragged.
DRAGP1: Sets the regen-drag input sampling rate.
DRAGP2: Sets the fast-drag input sampling rate.
DWGCHECK: Determines whether a drawing was last edited by a product other than AutoCAD.
DWGCODEPAGE: Stores the same value as SYSCODEPAGE (for compatibility reasons).
DWGNAME: Stores the drawing name as entered by the user.
DWGPREFIX: Stores the drive/directory prefix for the drawing.
DWGTITLED: Indicates whether the current drawing has been named.
EDGEMODE: Controls how TRIM and EXTEND determine cutting and boundary edges.
ELEVATION: Stores the current elevation relative to the current UCS for the current viewport in the current space.
EXPERT: Controls whether certain prompts are issued.
EXPLMODE: Controls whether EXPLODE supports non-uniformly scaled (NUS) blocks.
EXTMAX: Stores the upper-right point of the drawing extents.
EXTMIN: Stores the lower-left point of the drawing extents.
EXTNAMES: Sets the parameters for named object names (such as linetypes and layers) stored in symbol tables.
FACETRATIO: Controls the aspect ratio of faceting for cylindrical and conic ACIS solids.
FACETRES: Adjusts the smoothness of shaded and rendered objects and objects with hidden lines removed.
FILEDIA: Suppresses display of the file dialog boxes.
FILLETRAD: Stores the current fillet radius.
FILLMODE: Specifies whether multilines, traces, solids, all hatches (including solid-fill), and wide polylines are filled in.
FONTALT: Specifies the alternate font to be used when the specified font file cannot be located.
FONTMAP: Specifies the font mapping file to be used.
FRONTZ: Stores the front clipping plane offset from the target plane for the current viewport.
FULLOPEN: Indicates whether the current drawing is partially open.
GRIDMODE: Specifies whether the grid is turned on or off.
GRIDUNIT: Specifies the grid spacing (X and Y) for the current viewport.
GRIPBLOCK: Controls the assignment of grips in blocks.
GRIPCOLOR: Controls the color of non-selected grips (drawn as box outlines).
GRIPHOT: Controls the color of selected grips (drawn as filled boxes).
GRIPS: Controls the use of selection set grips for the Stretch, Move, Rotate, Scale, and Mirror grip modes.
GRIPSIZE: Sets the size of the grip box in pixels.
HANDLES: Reports whether object handles can be accessed by applications.
HIDEPRECISION: Controls the accuracy of hides and shades.
HIGHLIGHT: Controls object highlighting; does not affect objects selected with grips.
HPANG: Specifies the hatch pattern angle.
HPBOUND: Controls the object type created by BHATCH and BOUNDARY.
HPDOUBLE: Specifies hatch pattern doubling for user-defined patterns.
HPNAME: Sets a default hatch pattern name.
HPSCALE: Specifies the hatch pattern scale factor.
HPSPACE: Specifies the hatch pattern line spacing for user-defined simple patterns.
HYPERLINKBASE: Specifies the path used for all relative hyperlinks in the drawing.
IMAGEHLT: Controls whether the entire raster image or only the raster image frame is hightlighted.
INDEXCTL: Controls whether layer and spatial indexes are created and saved in drawing files.
INETLOCATION: Stores the Internet location used by BROWSER and the Browse the Web dialog box.
INSBASE: Stores insertion base point set by BASE.
INSNAME: Sets a default block name for INSERT.
INSUNITS: When you drag a block from AutoCAD DesignCenter, specifies a drawing units value.
INSUNITSDEFSOURCE: Sets source content units value.
INSUNITSDEFTARGET: Sets target drawing units value.
ISAVEBAK: Improves the speed of incremental saves, especially for large drawings.
ISAVEPERCENT: Determines the amount of wasted space tolerated in a drawing file.
ISOLINES: Specifies the number of isolines per surface on objects.
LASTANGLE: Stores the end angle of the last arc entered.
LASTPOINT: Stores the last point entered.
LASTPROMPT: Stores the last string echoed to the command line.
LENSLENGTH: Stores the length of the lens (in millimeters) used in perspective viewing for the current viewport.
LIMCHECK: Controls the creation of objects outside the drawing limits.
LIMMAX: Stores the upper-right drawing limits for the current space.
LIMMIN: Stores the lower-left drawing limits for the current space.
LISPINIT: When single-document interface is enabled, specifies whether AutoLISP-defined functions and variables are preserved when you open a new drawing.
LOCALE: Displays the ISO language code of the current AutoCAD version.
LOGFILEMODE: Specifies whether the contents of the text window are written to a log file.
LOGFILENAME: Specifies the path and name of the log file.
LOGFILEPATH: Specifies the path for the log files for all drawings in a session.
LOGINNAME: Displays the user's name as configured or as input when AutoCAD is loaded.
LTSCALE: Sets the global linetype scale factor.
LUNITS: Sets linear units.
LUPREC: Sets the number of decimal places displayed for linear units.
LWDEFAULT: Sets the value for the default lineweight.
LWDISPLAY: Controls whether the lineweight is displayed in the Model or Layout tab.
LWUNITS: Controls whether lineweight units are displayed in inches or millimeters.
MAXACTVP: Sets the maximum number of viewports that can be active at one time in the display.
MAXSORT: Sets the maximum number of symbol names or block names sorted by listing commands.
MBUTTONPAN: Controls the behavior of the third button or wheel on the pointing device.
MEASUREINIT: Sets the initial drawing units as English or metric.
MEASUREMENT: Sets drawing units as English or metric for the current drawing only.
MENUCTL: Controls the page switching of the screen menu.
MENUECHO: Sets menu echo and prompt control bits.
MENUNAME: Stores the menu file name, including the path for the filename.
MIRRTEXT: Controls how MIRROR reflects text.
MODEMACRO: Displays a text string on the status line.
MTEXTED: Sets the primary and secondary text editors to use for multiline text objects.
NOMUTT: Suppresses the message display (muttering) when it wouldn't normally be suppressed.
OFFSETDIST: Sets the default offset distance.
OFFSETGAPTYPE: Controls how to offset polylines when a gap is created as a result of offsetting the individual polyline segments.
OLEHIDE: Controls the display of OLE objects in AutoCAD.
OLEQUALITY: Controls the default quality level for embedded OLE objects.
OLESTARTUP: Controls whether the source application of an embedded OLE object loads when plotting.
ORTHOMODE: Constrains cursor movement to the perpendicular.
OSMODE: Sets running object snap modes using bitcodes.
OSNAPCOORD: Controls whether coordinates entered on the command line override running object snaps.
PAPERUPDATE: Controls the display of a warning dialog when attempting to print a layout with a paper size different from the paper size specified by the default for the plotter configuration file.
PDMODE: Controls how point objects are displayed.
PDSIZE: Sets the display size for point objects.
PERIMETER: Stores the last perimeter value computed by AREA, LIST, or DBLIST.
PFACEVMAX: Sets the maximum number of vertices per face.
PICKADD: Controls whether subsequent selections replace the current selection set or add to it.
PICKAUTO: Controls automatic windowing at the Select Objects prompt.
PICKBOX: Sets object selection target height.
PICKDRAG: Controls the method of drawing a selection window.
PICKFIRST: Controls whether you select objects before or after you issue a command.
PICKSTYLE: Controls the use of group selection and associative hatch selection.
PLATFORM: Indicates which platform of AutoCAD is in use.
PLINEGEN: Sets how linetype patterns generate around the vertices of a 2D polyline.
PLINETYPE: Specifies whether AutoCAD uses optimized 2D polylines.
PLINEWID: Stores the default polyline width.
PLOTID: Obsolete, has no effect except to preserve the integrity of pre-AutoCAD 2000 scripts and LISP routines.
PLOTROTMODE: Controls the orientation of plots.
PLOTTER: Obsolete. Has no effect except to preserve the integrity of pre-AutoCAD 2000 scripts and LISP routines.
PLQUIET: Controls the display of optional dialog boxes and nonfatal errors for batch plotting and scripts.
POLARADDANG: Contains user-defined polar angles.
POLARANG: Sets the polar angle increment.
POLARDIST: Sets the snap increment when the SNAPSTYL system variable is set to 1 (polar snap).
POLARMODE: Controls settings for polar and object snap tracking.
POLYSIDES: Sets the default number of sides for POLYGON.
POPUPS: Displays the status of the currently configured display driver.
PRODUCT: Returns the product name.
PROGRAM: Returns the program name.
PROJECTNAME: Assigns a project name to the current drawing.
PROJMODE: Sets the current Projection mode for trimming or extending.
PROXYGRAPHICS: Specifies whether images of proxy objects are saved in the drawing.
PROXYNOTICE: Displays a notice when you open a drawing containing custom objects created by an application that is not present.
PROXYSHOW: Controls the display of proxy objects in a drawing.
PSLTSCALE: Controls paper space linetype scaling.
PSPROLOG: Assigns a name for a prolog section to be read from the acad.psf file when you are using PSOUT.
PSQUALITY: Controls the rendering quality of PostScript images.
PSTYLEMODE: Indicates whether the current drawing is in a Color-Dependent or Named Plot Style mode.
PSTYLEPOLICY: Controls whether an object's color property is associated with its plot style.
PSVPSCALE: Sets the view scale factor for all newly created viewports.
PUCSBASE: Stores the name of the UCS that defines the origin and orientation of orthographic UCS settings in paper space only.
QTEXTMODE: Controls how text is displayed.
RASTERPREVIEW: Controls whether BMP preview images are saved with the drawing.
REFEDITNAME: Indicates whether a drawing is in a reference-editing state and stores the reference file name.
REGENMODE: Controls automatic regeneration of the drawing.
RE-INIT: Reinitializes the digitizer, digitizer port, and acad.pgp file.
RTDISPLAY: Controls the display of raster images during Realtime ZOOM or PAN.
SAVEFILE: Stores the current auto-save file name.
SAVEFILEPATH: Specifies the path to the directory for all automatic save files for the AutoCAD session.
SAVENAME: Stores the file name and directory path of the current drawing after you save it.
SAVETIME: Sets the automatic save interval, in minutes.
SCREENBOXES: Stores the number of boxes in the screen menu area of the drawing area.
SCREENMODE: Stores a bitcode indicating the graphics/text state of the AutoCAD display.
SCREENSIZE: Stores current viewport size in pixels (X and Y).
SDI: Controls whether AutoCAD runs in single- or multiple-document interface.
SHADEDGE: Controls the shading of edges in rendering.
SHADEDIF: Sets the ratio of diffuse reflective light to ambient light.
SHORTCUTMENU: Controls whether Default, Edit, and Command mode shortcut menus are available in the drawing area.
SHPNAME: Sets a default shape name.
SKETCHINC: Sets the record increment for SKETCH.
SKPOLY: Determines whether SKETCH generates lines or polylines.
SNAPANG: Sets snap and grid rotation angle for the current viewport.
SNAPBASE: Sets the snap and grid origin point for the current viewport relative to the current UCS.
SNAPISOPAIR: Controls the isometric plane for the current viewport.
SNAPMODE: Turns Snap mode on and off.
SNAPSTYL: Sets snap style for the current viewport.
SNAPTYPE: Sets the snap style for the current viewport.
SNAPUNIT: Sets the snap spacing for the current viewport.
SOLIDCHECK: Turns the solid validation on and off for the current AutoCAD session.
SORTENTS: Controls the OPTIONS command (from the Selection tab) object sort order operations.
SPLFRAME: Controls the display of splines and spline-fit polylines.
SPLINESEGS: Sets the number of line segments to be generated for each spline-fit polyline.
SPLINETYPE: Sets the type of curve generated by the Spline option of the PEDIT command.
SURFTAB1: Sets the number of tabulations to be generated for RULESURF and TABSURF.
SURFTAB2: Sets the mesh density in the N direction for REVSURF and EDGESURF.
SURFTYPE: Controls the type of surface-fitting to be performed by the Smooth option of the PEDIT command.
SURFU: Sets the surface density for PEDIT Smooth in the M direction.
SURFV: Sets the surface density for PEDIT Smooth in the N direction.
SYSCODEPAGE: Indicates the system code page specified in acad.xmf.
TABMODE: Controls the use of the tablet.
TARGET: Stores the location of the target point for the current viewport.
TDCREATE: Stores the local time and date the drawing was created.
TDINDWG: Stores the total editing time.
TDUCREATE: Stores the universal time and date the drawing was created.
TDUPDATE: Stores the local time and date of the last update/save.
TDUSRTIMER: Stores the user-elapsed timer.
TDUUPDATE: Stores the universal time and date of the last update/save.
TEMPPREFIX: Contains the directory name for temporary files.
TEXTEVAL: Controls the method of evaluation for text strings.
TEXTFILL: Controls the filling of TrueType fonts while plotting, exporting with the PSOUT command, and rendering.
TEXTQLTY: Sets the resolution tesselation fineness of text outlines for TrueType fonts while plotting, exporting with the PSOUT command, and rendering.
TEXTSIZE: Sets the default height for new text objects drawn with the current text style.
TEXTSTYLE: Sets the name of the current text style.
THICKNESS: Sets the current 3D solid thickness.
TILEMODE: Makes the Model tab or the last layout tab current.
TOOLTIPS: Controls the display of tooltips.
TRACEWID: Sets the default trace width.
TRACKPATH: Controls the display of polar and object snap tracking alignment paths.
TREEDEPTH: Specifies the maximum depth, that is, the number of times the tree-structured spatial index can divide into branches.
TREEMAX: Limits memory consumption during drawing regeneration by limiting the number of nodes in the spatial index (oct-tree).
TRIMMODE: Controls whether AutoCAD trims selected edges for chamfers and fillets.
TSPACEFAC: Controls the multiline text line spacing distance measured as a factor of text height.
TSPACETYPE: Controls the type of line spacing used in multiline text.
TSTACKALIGN: Controls the vertical alignment of stacked text.
TSTACKSIZE: Controls the percentage of stacked text fraction height relative to selected text’s current height.
UCSAXISANG: Stores the default angle when rotating the UCS around one of its axes using the X, Y, or Z options of the UCS command.
UCSBASE: Stores the name of the UCS that defines the origin and orientation of orthographic UCS settings.
UCSFOLLOW: Generates a plan view whenever you change from one UCS to another.
UCSICON: Displays the UCS icon for the current viewport.
UCSNAME: Stores the name of the current coordinate system for the current viewport in the current space.
UCSORG: Stores the origin point of the current coordinate system for the current viewport in the current space.
UCSORTHO: Determines whether the related orthographic UCS setting is restored automatically when an orthographic view is restored.
UCSVIEW: Determines whether the current UCS is saved with a named view.
UCSVP: Determines whether the UCS in active viewports remains fixed or changes to reflect the UCS of the currently active viewport.
UCSXDIR: Stores the X direction of the current UCS for the current viewport in the current space.
UCSYDIR: Stores the Y direction of the current UCS for the current viewport in the current space.
UNDOCTL: Stores a bitcode indicating the state of the Auto and Control options of the UNDO command.
UNDOMARKS: Stores the number of marks that have been placed in the UNDO control stream by the Mark option.
UNITMODE: Controls the display format for units.
USERI1–5: Stores and retrieves integer values.
USERR1–5: Stores and retrieves real numbers.
USERS1–5: Stores and retrieves text string data.
VIEWCTR: Stores the center of view in the current viewport.
VIEWDIR: Stores the viewing direction in the current viewport.
VIEWMODE: Controls the View mode for the current viewport using bitcode.
VIEWSIZE: Stores the height of the view in the current viewport.
VIEWTWIST: Stores the view twist angle for the current viewport.
VISRETAIN: Controls the visibility, color, linetype, lineweight, and plot styles (if PSTYLEPOLICY is set to 0) of xref-dependent layers and specifies whether nested xref path changes are saved.
VSMAX: Stores the upper-right corner of the current viewport's virtual screen.
VSMIN: Stores the lower-left corner of the current viewport’s virtual screen.
WHIPARC: Controls whether the display of circles and arcs is smooth.
WMFBKGND: Controls the background of the output Windows metafile resulting from the WMFOUT command, and for the metafile format of objects placed on the Clipboard or dragged and dropped into other applications.
WORLDUCS: Indicates whether the UCS is the same as the WCS.
WORLDVIEW: Determines whether input to the 3DORBIT, DVIEW, and VPOINT commands is relative to the WCS (default), the current UCS, or the UCS specified by the UCSBASE system variable.
WRITESTAT: Indicates whether a drawing file is read-only or can be written to, for developers who need to determine write status through AutoLISP.
XCLIPFRAME: Controls the visibility of xref clipping boundaries.
XEDIT: Controls whether the current drawing can be edited in-place when being referenced by another drawing.
XFADECTL: Controls the fading intensity for references being edited in-place.
XLOADCTL: Turns xref demand loading on and off and controls whether it opens the original drawing or a copy.
XLOADPATH: Creates a path for storing temporary copies of demand-loaded xref files.
XREFCTL: Controls whether AutoCAD writes external reference log (XLG) files.
ZOOMFACTOR: Controls the incremental change in zoom with each IntelliMouse wheel action, whether forward or backward.
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