Autocad Commands.pdf
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This document provides descriptions and usage options for various commands in AutoCAD including ARC, AREA, ARRAY, BASE, BHATCH, BLOCK, BPOLY, BREAK, CHAMFER, CHANGE, CIRCLE, COLOR, COPY, FILL, FILLET, GRID, HATCH, HELP, INSERT, LAYER, LIMITS, LINE, LINETYPE, LIST, LOAD, LTSCALE, NEW, and OFFSET. Each command is briefly described and its main options are listed.
Autocad Commands.pdf
- 1. Command Description Options ARC or A Draws an arc. The default method of drawing arcs is selecting three points (so-called "3 point arc"), which are the two endpoints of the arc and some other point along its locus. Other methods of drawing an arc can be specified by three letters, such as SEA, which means "Start Point, End Point, and Included Angle." A Included angle C Center point of arc D Direction angle of a line tangent to the arc E Endpoint of arc L Length of chord passing thru both endpoints of the arc R Radius S Start point of arc <RET> uses the end of the last line or arc as the start point for the arc AREA Computes the area of any shape by selecting points at the corners of the shape, or by selecting a circle or polyline after typing or picking the "E" option A sets "Add" mode S sets "Subtract" mode E computes area of selected circle or polyline ARRAY Makes multiple copies of selected objects in a rectangular (parallel with the snap rotation) or circular pattern R rectangular array type P "polar" array type in circular pattern, you must indicate number of items and angle to fill, and whether the objects get rotated with the angle C "circular" array type in a circular pattern, you must indicate angle between items, angle to fill, and whether objects get rotated with the angle BASE Specifies origin of current drawing for subsequent insertion into another drawing -- is normally set to point 0,0,0 can be transparent BHATCH Fills an automatically defined boundary with a hatch pattern through the use of dialogue boxes. Also allows previewing and replacing adjustments without starting over each time.
- 2. BLOCK Forms a single compound entity from a group of entities within the current drawing BPOLY Creates a closed polyline of a boundary by picking an open area within a area enclosed by lines, arcs or circles. BREAK Erases part of a line, arc or circle, or splits it into two lines or arcs F allows respecification of first point CHAMFER Creates a chamfer (a angled line connection) at the intersection of two lines D Sets chamfer distances P Chamfers an entire polyline CHANGE A multifunctioning command which can be used to alter the following: 1. location of individual endpoints of lines 2. radius of a circle 3. properties: layer, elevation, thickness, color and linetype of lines, polylines, arcs and circles 4. style, font, size, location, rotation, and wording of text entities P Changes properties of objects C Color E Elevation LA Layer LT Linetype T Thickness CIRCLE or C Draws a circle of any size. The default method is to pick a center point and pick a point on the radius or type the radius dimension, but other methods can be selected. 2P Specifies circle by picking 2 points on the diameter 3P Specifies circle by picking 3 points through which the circle will pass D Allows entering the diameter dimension instead of radius dimension TTR Specifies circle by picking two lines, arcs or circles for the circle to be tangent to, and entering the dimension of the radius <RET> Enters radius of circle (the default) COLOR Sets the current color for can be transparent
- 3. or COLOUR subsequently drawn objects (objects drawn after the command is invoked). The default current color is a so-called "logical" color called "BYLAYER" which means that the color of the object drawn will be the color which the current layer has been set to. <number> sets current color to color number entered <name> sets current color to color name entered BYBLOCK sets floating entity color BYLAYER sets current color to whatever color is assigned to the current layer COPY or CP Draws a copy of selected objects using two methods -- "base point" method, or "displacement" method. M Allows multiple copies to be made of an object FILL Controls whether solids, traces, wide polylines, and donuts will be filled with ink. Note that fill is only visible when viewing these entities in plan (perpendicular to line of sight) can be transparent ON entities visually filled with solid ink OFF entities not visually filled but are shown in outline only FILLET Constructs an arc of specified radius between two lines, arcs, circles, or will create arcs of the specified radius at the vertices of a polyline. Radius of the arc to be constructed may be set to 0, which will make a sharp corner P Fillets an entire Polyline at the vertices R Allows setting of the fillet radius. Default value is 0. Radius remains set until changed again GRID Displays a rectangular grid of white dots on the screen at a specified X- and Y- spacing can be transparent ON Turns grid display on OFF Turns grid display off S Locks grid spacing to SNAP resolution A Sets grid aspect (different X- and Y- spacings <number> Sets grid spacing for both X- and Y- coordinates
- 4. <number X> Sets grid spacing to multiple "X" of snap spacing HATCH Allows drawing of cross-hatching and pattern filling <pattern-name> uses hatch pattern name from library file to fill designated area with a pseudo- block hatch entity -- can be reduced to individual lines and points by EXPLODEing it. <*pattern-name> uses hatch pattern name from library file to fill designated area with individual lines and points, not a block U "User-defined" hatch pattern drawn of parallel lines with a specified distance between, at a specified angle, and either single- hatching or double (cross)- hatching ? Lists names of available hatch patterns <pattern-name> or U can be followed by a comma and the following sub-commands: I Ignores any boundaries inside the outermost boundary N Normal style of selecting boundaries with alternating hatched and unhatched nested areas O Hatches outermost boundary area only HELP or ? Displays a list of all valid commands and data entry options, or obtains help for a specific command or prompt can be transparent if invoked while another command is in process, it will assume that you want help on that command INSERT Inserts a previously created block or <filename> Inserts a
- 5. drawing file into the current drawing filename from the default directory into the current drawing, assuming that there is no block by that name in the current drawing <blockname>=<filename> Creates a block in the current drawing with the same name as the file <*name> Inserts a block in its constituent entities rather than as a block -- also called a "Star Block" or Pre-exploded block C Reply to X scale prompt -- allows scale to be specified by two points (Corner specification of scale) XYZ Reply to X scale prompt -- allows specification of X, Y, and Z scales ~ Displays a file dialogue box ? Lists names of defined blocks within the current drawing LAYER or LA Creates named drawing layers, assigns color and linetype properties to those layers, allows layers to be frozen and thawed, locked and unlocked, and allows current layer to be set can be transparent C Assigns color to named layer F Freezes named layers (comma separates a list of layers to be frozen, * can be used as a wildcard) -- current layer cannot be frozen L Assigns linetype to named layer LO Locks named layer M Makes a layer -- creates a new layer and makes it the current layer N Creates new layers with named names (comma separates a list of layers to be created, * can be
- 6. used as a wildcard) ON Turns named layers on if they were turned off (comma separates a list of layers to be turned on, * can be used as a wildcard) OFF Turns named layers off if they were turned on (comma separates a list of layers to be turned off, * can be used as a wildcard) LAYER or LA (Continued) S Sets named layer as the current layer T Thaws named layers which are frozen (comma separates a list of layers to be frozen, * can be used as a wildcard) U Unlocks named layer ? Gives information about named layers, * can be used as a wildcard LIMITS Changes the imaginary boundaries of the drawing, and controls whether drawing can be made outside of the boundaries. If Limit-checking is ON, drawing cannot be done outside of limits. can be transparent <2 points> Sets lower-left and upper -right drawing limits ON Enables limit-checking OFF Disables limit-checking LINE or L Draws straight lines <RET> In reply to From Point: prompt, line begins at end of previous line or arc C In reply to To point: prompt, closes the polygon back to first "From Point" U In reply to To point: prompt, undoes last line segment LINETYPE A linetype is a series of lines and spaces -- dots and dashes -- Sets the current linetype to be used can be transparent ? Lists a linetype library , or named linetypes which are loaded
- 7. for all subsequent entities to be drawn, allows creation of new linetype definitions, and allows loading of previously created linetypes from DOS files C Creates a linetype definition L Loads a previously creatred linetype definition S Set current linetype -- note that the current linetype should always be set to the logical linetype "BYLAYER" LIST Lists all information about selected object, such as what type of entity it is (Line, Arc, Circle, Block, etc.), what layer it is on, what color it is, the location of its endpoints, what its Z- axis (elevation), what its thickness is, etc. LOAD Loads a file of user-defined shapes to be used with the Shape command ? Lists the names of loaded Shape files LTSCALE Sets scale factor to be applied to all linetypes within the drawing can be transparent NEW Creates a new drawing. When selected from a menu or typed in at the Command: prompt, this command brings up a dialogue box which allows setting a name for the new drawing by typing the name in the box, selection of a "prototype" drawing or typing a name of the new drawing and then an = sign and then the name of a drawing to be used as a prototype. OFFSET Creates a new line, polyline arc or circle parallel to the entity and at a specified distance from it. <number> specifies offset distance T "Through" allows specification of a point through which the offset line, polyline, arc or circle is to pass OOPS restores erased entities, or entities made into a Block OPEN Opens an existing drawing ORTHO Constrains drawing so that only lines can be transparent
- 8. aligned with the grid can be drawn -- usually means only horizontal or vertical lines, however, if the crosshairs are rotated through the "Snap" "Rotate" command sequence, the lines drawn are constrained to being parallel with the crosshair rotation. Constraint can be overridden by snapping to a point or by entering exact coordinates for endpoints. OSNAP Enables points to be precisely located on reference points of existing objects. This is the so-called "Running Mode" of OSNAP, which sets selection method to run continuously until set to NON (none) or until overridden by selecting another "Interrupt Mode" OSNAP method from the cursor menu. Combinations of OSNAP methods can be used by selecting a series of options separated by commas. For instance, if you want ot always pick either endpoints or intersection points when locating endpoints of lines, you would issue the command as follows: OSNAP <RET> END,INT <RET> can be transparent CEN CENter of arc or circle END closest ENDpoint of arc or line INS INSertion point of Text or Block INT INTersection of line, arc, or circle MID MIDpoint of line, arc, rectangle side, or polygon side NEA NEArest point selected by aperture on line, polyline, arc, or circle NOD NODe (another name for a Point) NON NONe -- used when a "Running OSNAP" is on to temporarily turn off OSNAP selection PER PERpendicular point to line, arc or circle -- when used with an arc or circle it will draw a line to the surface of the arc or circle heading toward the center point QUA QUAdrant point of arc or circle (top, bottom, right or left side)
- 9. QUI QUIck mode -- this is a modifier to one of the other OSNAP options -- it will find the first point that meets the requirements, not necessarily the closest point to the aperture. TAN TANgent point to arc or circle PAN Moves the display window without changing the magnification factor can be transparent PEDIT Allows editing of polylines which are already drawn C Closes an open polyline D Decurves, or returns a Spline curve to its control frame or series of connected straight lines E Edit vertices F Fits curve to a polyline -- makes a series of straight lines into a curve which will pass through the vertices J Joins a line or arc or another polyline to an open polyline L Toggles linetype generation to be either a continuous pattern of dashes passing through the vertices, or a pattern which starts and ends at each vertex O Opens a closed polyline S Uses the polyline vertices as a frame for a Spline Curve -- type of Spline Curve is set by the Variable "Splinetype." U Undoes one editing operation W Sets a uniform width for the Polyline PEDIT (Continued) Vertex Editing Options: B Sets first vertex for Break
- 10. G "Go" -- performs a Break or Straighten operation I Inserts a new vertex after current one M Moves current vertex N Makes the Next vertex current P Makes the Previous vertex current R Regenerates the Polyline S Sets first vertex for Straighten T Sets tangent direction for current vertex W Sets new width for the following segment X Exits vertex editing, or cancels Break and Straighten PEDIT Mesh Allows editing of Meshes which are already drawn D De-smooth -- restores original mesh E Edits mesh vertices M Opens (or closes) the mesh in the M direction N Opens (or closes) the mesh in the N direction S Fits a smooth surface as defined by the Variable SURFTYPE U Undoes one editing operation X Exits Pedit command Vertex Editing Options: D Makes previous vertex Down in M direction current
- 11. L Makes previous vertex to Left in N direction current M Moves the marked vertex N Makes the Next vertex current P Makes the Previous vertex current R Makes next vertex to Right in N direction current RE Redisplays the polygon mesh U Makes the next vertex Up in M direction current X Exits vertex editing PLINE Draws a 2D polyline, which are connected line or arc segments with user-determined width and taper H sets the half-width of the polyline segments U Undoes previous segment W sets the width of polyline segments <RET> Exits the Pline command The following options are available only as long as you are drawing in Line mode: A Switches to the Arc mode to allow integration of arcs into the polyline C Closes the polyline with straight segment L Segment length (continues previous segment) The following options are available only as long as you are in the Arc mode: A Included angle CE Center Point
- 12. CL Closes with arc segment D Starting direction L Chord length, or switches to line mode R Radius S Second point of 3-point arc PLOT Plots a drawing to a plotting device, a printer, or to a "Plot File." QSAVE Saves the current drawing "Quickly" without requesting a filename (as long as file has already been given a name) QTEXT Controls display of text -- command stands for "QuickTEXT" ON Lines of text displayed as rectangles OFF Lines of text displayed as text QUIT Exits AutoCAD -- if the current drawing has not been Saveds in its current state, a dialogue box will appear asking if you want to Save the drawing, Discard the changes, or Cancel the Exit command RECOVER Attempts to recover damaged or corrupted drawings REDEFINE Restores a built-in command which may have been deleted by the command UNDEFINE REDO Reverses a previous command if it was U or UNDO REDRAW Refreshed or cleans up the current Viewport can be transparent REDRAWALL Redraws all viewports can be transparent REGEN Regenerates the current Viewport by recalculating the vector locations of all endpoints
- 13. REGENALL Regenerates all Viewports REGENAUTO Controls automatic regeneration performed by other commands can be transparent ON Allows automatic regens OFF Prevents automatic regens REINIT Allows the I/O ports, the digitizer, the display, the plotter, and the ACAD.PGP file to be reinitialized. This command allows selection of what you want to reinitialize through a dialogue box. It is most useful when you make changes "on the fly" to the ACAD.PGP file and want to immediately make use of those changes without having to exit AutoCAD and get back into it. RENAME Changes the names associated with Text Styles, Layers, Linetypes, Blocks, Views, User Coordinate Systems, Viewport Configurations, and Dimension Styles. B Renames Blocks D Renames Dimension Styles LA Renames Layers LT Renames Linetypes S Renames Text Styles U Renames UCS VI Renames Views VP Renames Viewports RESUME Resumes an interrupted command script can be transparent REVSURF Creates a 3D polygon mesh approximating a surface of revolution, by rotating a curve around a selected axis ROTATE Rotates existing objects parallel to the current UCS RSCRIPT Restarts a command script from the beginning SAVE Requests a filename and saves the
- 14. drawing SAVEAS Same as SAVE, but also renames the current drawing and keeps the new name current SCALE Alters the size of existing objects R Resizes with respect to a reference size SCRIPT Runs a command script. A script is a an ASCII file which contains various commands that when executed operates just as if you typed in those commands, one by one, by hand can be transparent SHADE Shades 3D model in current Model Space Viewport SHAPE Draws predefined Shapes ? Lists available Shape names SHELL Allows access to internal operating system (DOS) commands. Once SH is invoked, followed by two <RET>s, the DOS Prompt will be displayed, so you can enter any DOS command. To get back to AutoCAD, simply type EXIT at the DOS prompt. SKETCH Permits freehand sketching simulation C Connect: restarts SKETCH at endpoint E Erases (backs up over) temporary lines P Raises/lowers sketching pen Q Discards temporary lines, remains in SKETCH R Records temporary lines, remains in SKETCH X Records temporary lines, exits SKETCH . Draws line to current point SNAP Specified a round-off interval for point entry so that entities can be placed at precise locations can be transparent <number> sets snap alignment resolution
- 15. ON aligns designated points OFF does not align designatged points A sets aspect ratio (differing X and Y spacing) R Rotates the snap grid and crosshairs, and turns on SNAP after, if not already turned on S Selects either Standard (rectangular) or Isometric Snap grid SOLID Draws filled polygons. Fill can be turned ON or OFF with the FILL command STATUS Displays drawing statistics and modes on the Text Screen can be transparent STRETCH Allows moving a portion of a drawing while retaining their connections to other parts of the drawing. You cannot stretch Blocks, Hatch patterns, or Text entities, however. STYLE Creates named Text styles, with user- selected combinations of font, height, mirroring, obliging, and horizontal scaling. can be transparent ? Lists specified (or all) currently defined text styles TEXT Draws text characters of any size with selected styles J Prompts for justification options S Lists or selects text style A Aligns text between two points, with style-specified width factor, AutoCAD computes approximate height proportional to length of text line C Centers text horizontally about a defined point F Fits text between two points,
- 16. with specified height, AutoCAD computes approximate width factor to fill the distance between the two points M Centers text horizontally and vertically about a defined point R Right-justifies text BL Bottom Left justification BC Bottom Center justification BR Bottom Right justification ML Middle Left justification MC Middle Center justification MR Middle Right justification TL Top Left justification TC Top Center justification TR Top Right justification UCS Defines or modifies the current User Coordinate System D ("Delete") Deletes one or more saved coordinate systems E ("Entity") Sets a UCS with the same extrusion direction as that of the selected entity O ("Origin") Shifts the origin of the current coordinate system P ("Previous") Restores the Previous UCS R ("Restore") Restores a previously saved UCS S ("Save") Saves the current UCS V ("View") Establishes a new UCS whose Z-axis is parallel to the current viewing direction
- 17. W ("World") Sets the current UCS to the World Coordinate System X Rotates the current UCS around the X-axis Y Rotates the current UCS around the Y-axis Z Rotates the current UCS around the Z-axis ZA Defines a UCS using an origin point and a point on the positive portion of the Z-axis 3 Defines a UCS using an origin point, a point on the positive portion of the X-axis, and a point on the positive Y-portion of the XY plane ? Lists specified saved coordinate systems UCSICON Controls visibility and placement of the User Coordinate System Icon, which graphically indicates the origin and orientation of the current UCS. The options normally affect only the current viewport. A Changes settings of all active viewports N ("NoOrigin") Displays the UCSICON at the lower-left corner of the viewport (i.e., not at the Origin) OR ("ORigin") Displays the UCSICON at the origin of the current UCS, if possible (if the origin point is not within the current viewport, the location of the UCSICON defaults to the lower-left corner of the viewport) OFF Turns the UCSICON off ON Turns the UCSICON on UNDO Reverses the effect of multiple commands, and provides control over the "Undo" facility <number> Undoes the <number> of most recent commands in reverse order A ("Auto") Controls treatment of menu items as UNDO "Groups"
- 18. B ("Back") Undoes back to previous UNDO "Mark" C ("Control") Enables/disables the UNDO feature E ("End") Terminates an UNDO Group (a sequence to be treated as one command) G ("Group") Begins an UNDO Group (a sequence to be treated as one command) M ("Mark") Places "marker" in UNDO file (for use with "Back") Control Sub-Options All Enables the full UNDO feature None Disables U and UNDO entirely, and discards any previous UNDO information saved earlier in the editing session One Limits U and UNDO to a single operation UNITS Selects coordinate and angle display formats and precision can be transparent VIEW Saves the current graphic display and space as a named view, or restores a saved view and space to the display can be transparent D Deletes a named view R Restores named view to screen S Saves current display as named view W Saves specified Window as named view ? Lists specified named views VIEWPORTS Used in Model Space only, and has been superseded by Paper Space Vports, created with the MVIEW D Deletes a saved viewport configuration
- 19. or VPORTS command. Divides the AutoCAD graphics display into multiple viewports, each of which can contain a different view of the current drawing (maximum of 4 "tiled" viewports per viewport) J Joins (merges) two viewports R Restores a saved viewport configuration S Saves the current viewport configuration SI ("SIngle") Displays a SIngle viewport filling the entire graphics area 2 Divides the current viewport into 2 viewports 3 Divides the current viewport into 3 viewports 4 Divides the current viewport into 4 viewports ? Lists the current and saved viewport configurations ZOOM Enlarges or reduces the display magnification of the drawing, without changing the actual size of the entities can be transparent <number> multiplier from original magnification <number X> multiplier from current magnification <number XP>multiplier of magnification relative to paper space -- used for plotting to get right plot scale in each viewport A ("All") fills limits of drawing to screen C ("Center") makes picked point the center of the screen D ("Dynamic") makes an adjustible rectangular lens appear on the screen which is capable of being made smaller or larger and moved to different positions over the drawing and once set by the user, the drawing will quickly
- 20. zoom to the location and magnification set for the lens. This sub-command is no longer useful because all computers have very fast zooms naturally now. E ("Extents") makes the farthest edges of the actual visible drawing fill up the graphics screen L ("Lower-Left") makes the point picked become shoved to the lower-left corner of the graphics screen P ("Previous") zooms back to whatever the last zoom, previous to the current zoom was -- AutoCAD stores about 10 of these, so you can walk backward in zoom magnification 10 times V ("Virtual Screen") makes the largest area available to the graphics card fill the graphics screen -- this varies with the quantity of graphics RAM that your graphics card has W ("Window") asks you to pick the lower left corner and the upper right corner of a zoom window and then fits that window to the graphics screen