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3. Commands

3.1. AutoCAD 2020

3.1.1 New and changed commands

BLOCKSPALETTE Opens the palette of blocks.
BLOCKSPALETTECLOSE Closes the palette of blocks.
CLASSICINSERT Opens the classic Insert dialog box.
INSERT Starts the BLOCKSPALETTE command except in scripts that open the older INSERT command for script compatibility.
-INSERT Starts the command line version of the classic INSERT command.
Cleanup Opens the newly designed Cleanup dialog box.
COMPARISON Closes the comparison toolbar and ends the comparison.
COMPAREEXPORT Exports the comparison results to a new drawing called a snapshot drawing and opens the drawing.
COMPAREIMPORT Imports objects from the comparison file into the current drawing. Only the selected objects that are present in the comparison file and not in the current file are imported.
MEASUREGEOM Adds the Quick option for real-time measurements.
AMDIMARRANGE Now supports the arrangement of multiple horizontal and vertical dimensions.
TEXTLAYER Defines a default layer for new text and multiline text objects in the current drawing.

3.1.2 New system variables

BLOCKMRULIST Controls the number of blocks displayed on the Recent tab of the block palette.
BLOCKNAVIGATE Controls the file and blocks displayed on the Other Drawing tab of the Block Palette. Effective the next time the program is started.
BLOCKREDEFINEMODE Controls whether the Block - Redefine Block task dialog box appears when a block from the block palette with the same name as a block is inserted within the current drawing.
BLOCKSTATE Reports whether the block palette is open or closed.

3.2 AutoCAD 2019

3.2.1 New and modified commands

Compare Compare the differences between two revisions of the same drawing or different drawings and highlight them.
-compare The command window is used to compare and highlight the differences between two revisions of the same drawing or different drawings.
COMPARISONINFO Pastes or copies the property information of the two compared drawing files.
sharedviews Opens the Shared Views palette.
sharedviewsclose Closes the Shared Views palette.

3.2.2 New System Variables

COMPARECOLOR1 Defines the color of the objects that are only present in the first drawing in the file of the comparison result drawing.
COMPARECOLOR2 Defines the color of objects that are only present in the second drawing in the file of the comparison result drawing.
COMPARECOLORCOMMON Determines the color of the objects that are identical in the two compared drawings.
COMPAREFRONT Defines the default display order of overlapping objects in the comparison results drawing.
COMPAREHATCH Determines whether hatch objects are included in the drawing comparison.
COMPAREPROPS Determines whether a change in a non-geometric (display) property is recognized as a change between two drawing revisions.
COMPARERCMARGIN Specifies the offset distance of the boundary frame of a revision cloud that marks the object differences in a comparison result drawing.
COMPARERCSHAPE Determines whether nearby individual changes are merged as a single large rectangle or multiple small rectangles in the comparison results drawing.
COMPARESHOW1 Displays the objects that only exist in the first drawing.
COMPARESHOW2 Displays the objects that only exist in the second drawing.
COMPARESHOWCOMMON Displays the objects that match in both drawings being compared.
COMPARESHOWRC Displays a revision cloud over the difference in the comparison result drawing.
COMPARETEXT Determines whether text objects are included in the drawing comparison.
COMPARETOLERANCE Specifies the tolerance used when comparing two drawing files. Objects are considered identical if they are less than or equal to a certain decimal value.
FILLETPOLYARC Determines the rounding behavior of polylines with arcs, either current or obsolete. Only affects the Polyline option of the ROUND command.
MVIEWPREVIEW Controls the preview behavior when inserting a named or new layout viewport.
SECUREREMOTEACCESS Determines whether files can be accessed from the Internet or from remote servers.
SHAREVIEWPROPERTIES Determines whether drawing properties are considered for shared views.
SHAREVIEWTYPE Determines whether a shared view is created from the current view, model space, layout, or the entire drawing.
STUDENTDRAWING Indicates whether the current drawing was saved with the student version of an Autodesk product.

3.3. AutoCAD 2018

3.3.1 New and changed commands

NEUANS Saves a new named view from the display in the current viewport or by defining a rectangular window.

3.3.2 New System Variables

LAYEROVERRIDEHIGHLIGHT Activates or deactivates the visibility of the background color marker for layers with overrides.
THUMBSIZE2D Controls whether the thumbnails of drawings with 2D visual wireframe styles are set to a screen resolution of 256 x 256 pixels.
VISRETAINMODE Controls the behavior of the VISRETAIN system variable, which is set to 1.
XREFLAYER Specifies a default layer for a new XRef.
PDFSHX Converts the SHX geometry imported from PDF files into individual multiline text objects.
MILLISECS Stores the number of milliseconds elapsed since the system was started.
PDFSHXBESTFONT When converting imported PDF geometry to text, checks whether the PDFSHXTEXT command selects the font with the best match or the first font that exceeds the recognition threshold.
REFPATHTYPE Controls whether the referenced files use complete, relative, or no paths when first mapped to the file of a parent drawing.
SELECTIONOFFSCREEN Controls the selection of objects outside the screen.

3.4. AutoCAD 2017

3.4.1 New and changed commands

AMLGISO Hides or locks all layergroups except those of the selected objects.
AMLGUNISO Recovers all layergroups hidden or locked with the AMLGISO command.
AMMOTOR2D Inserts a motor from a standard parts library.
AMRECTBWH Creates a rectangle by selecting the center of the base as the starting point and specifying the full base and height.
AMRECTBWH2 Creates a rectangle using the center of the base as the starting point and specifying half the base and full height.
AMRECTCW2H Creates a rectangle using the center of the rectangle as the starting point and specifying half the base and full height.
AMRECTCW2H2 Creates a rectangle using the center of the rectangle as the starting point and specifying half the base and half the height.
AMRECTCWH Creates a rectangle using the center of the rectangle as the starting point and specifying the whole base and height.
AMRECTCWH2 Creates a rectangle using the center of the rectangle as the starting point and specifying the full base and half the height.
ARMRECTLWH Creates a rectangle using the center of the height as the starting point and specifying the full base and height.
AMRECTLWH2 Creates a rectangle by selecting the center of the height as the starting point and specifying the full base and half the height.
AMRECTQBT Creates a square using the base center as the starting point and specifying the full base.
AMRECTQBY Creates a square using the center of the base as the starting point and specifying half of the base.
AMRECTQCR Creates a square using the center of the square as the starting point and specifying half the base.
AMRECTQCW Creates a square using the center of the square as the starting point and specifying the length of the base.
AMRECTQLR Creates a square using the center of the height and specifying the full base.
AMRECTQLY Creates a square using the center of the height as the starting point and specifying half the base.
AMRECTQXY Creates a square using a corner of the base as the starting point and specifying the full base.
AMRECTXWH Creates a rectangle using a corner of the rectangle as the starting point and specifying the full base and height.

3.4.2 New system variables

AMLGCOLORMODE Makes the layergroup color available for editing.
AMLGLTMODE Makes the line type of the layer group available for editing.
AMLGLWMODE Makes the Line Thickness property of the layergroup available for editing.
AMNOTETAB Specifies whether the Annotation Icon dialog box or the context-sensitive ribbon tab of the Ribbon Command Line Comment is displayed when editing command line comments.